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AI & Machine Learning
AI Engineering$97Learn to build, evaluate and deploy machine learning models with Python, from feature engineering to serving and monitoring.LLMs & Prompting$97Learn how large language models work and how to prompt, ground, fine-tune and evaluate them when building real applications.AI Agents$97Learn how AI agents plan and use tools, and how to build and deploy them safely with memory, orchestration and human oversight.Computer Vision$97Learn how deep learning models see images, and how to build classification, detection and segmentation models and deploy them.MLOps$97Learn the pipelines, tracking, versioning and monitoring that keep machine learning models reliable after they reach production.
Data & Applied AI
Generative AI for Business$97Learn to find, design and safely roll out generative AI workflows that save your team real time on everyday tasks.Data Engineering Foundations$97Understand how data moves from source systems into reliable, analysis-ready tables, and build your first simple pipelines.NLP Essentials$97Learn how computers process text — from tokenisation to transformer models — and apply NLP techniques to practical problems.AI Product Management$97Learn how to scope, build and ship AI-powered product features that solve real user problems responsibly.Model Evaluation & Testing$97Learn how to measure whether a machine-learning or language model is actually good enough, and keep testing it after launch.
Cloud & DevOps
Cloud Architecture$97Learn to design cloud infrastructure that is reliable, secure, performant and cost-aware, using patterns that apply across AWS, Azure and GCP.Kubernetes & Containers$97Learn to package applications in containers and run, scale and troubleshoot them on Kubernetes.Linux Administration$97Build the everyday Linux skills needed to manage servers confidently from the command line.Infrastructure as Code (Terraform)$97Learn to define cloud infrastructure in code with Terraform so it is repeatable, reviewable and safe to change.Networking for Cloud$97Understand IP addressing, routing, DNS and cloud networking well enough to design and troubleshoot real environments.
Systems & Architecture
Microservices$97Learn when and how to split systems into microservices, how services communicate, and how to keep them resilient and observable.API Architecture$97Learn how to connect enterprise systems reliably using well-designed APIs, integration patterns, messaging and data synchronisation.Enterprise IT$97Learn the frameworks, layers and documents enterprise architects use to align IT systems with business strategy.DR & BCP$97Learn to plan, build and test disaster recovery and business continuity so systems and data can be restored when something goes wrong.SRE Basics$97Learn the core practices teams use to keep services reliable: SLOs, monitoring, incident response and reducing toil.
Cybersecurity
Ethical Hacking$97Learn the methodology penetration testers use to find and report weaknesses, practised only in labs and systems you are authorised to test.Network Security$97Understand how to secure a network with firewall rules, segmentation, intrusion detection and VPNs, and how to monitor it.Zero Trust$97Learn how to plan a move from perimeter-based security to Zero Trust: identity-centric, least-privilege access with continuous verification.Forensics & IR$97Learn how incidents are investigated: collecting evidence properly, analysing disks, memory and logs, and reporting what happened.CompTIA Security+ Exam Prep$97Study the topics covered by the CompTIA Security+ (SY0-701) exam objectives in a structured, self-paced way.
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Leadership & Management
Leadership$97Learn the core habits of effective management, from setting expectations and delegating to feedback and handling conflict.Leadership Development$97Build practical leadership skills you can use with your team straight away, from trust and clarity to coaching and change.Change Management$97Learn to plan, communicate and sustain organisational change so new ways of working are actually adopted.Business Management Fundamentals$197How a business actually runs - planning, people, money and operations - for new managers and owner-operators.Leading Projects Through Ambiguity$127Learn to frame, decide and deliver when a project's goal, path or people are unclear.
Communication
Public Speaking$97Learn to manage nerves, structure a clear message and speak with confidence in meetings, presentations and on stage.Negotiation$97Learn to prepare for, conduct and close negotiations in work and everyday life with more clarity and confidence.Critical ThinkingSharpen how you reason, question assumptions, evaluate evidence, and make decisions you can actually defend.Sales Mastery: Close More Deals$197A complete consultative sales process - prospecting, discovery, presenting, handling objections and closing - without the pressure tactics.
Professional Skills
Business Analysis Foundations$127Learn the core business analysis skills of elicitation, process modelling and clear, prioritised requirements.Core Business Skills$127Learn the workplace skills rarely taught in school, from clear writing and good meetings to feedback and sound judgement.Time Management$97Build a realistic planning system that helps you focus on what matters and get important work done.Business Tools Mastery Suite$197Pick, set up and connect the software stack a small business runs on - and make the tools work together.
Career & Legal
How to Change Your Career Path$97Work out whether and how to change careers, then plan and make the move step by step.Intro to Business Law$147Understand the legal foundations of everyday business, from entity choice and contracts to employment and intellectual property.Intro to Paralegal$147Get a clear, practical introduction to what paralegals do and the core skills of legal research, writing and case support.Intro to Civil Litigation$147Follow a civil case from start to finish and understand pleadings, discovery, motions, trial and settlement.Paralegal Career Track Checklist (Free)12 checks against what firms commonly screen for in an entry-level paralegal hire.
Career & Reskilling
Secrets to Reskilling$97Learn how to choose, learn and prove new skills while working, caring for others or between roles.Workplace Reskilling$97Learn to identify skills gaps and design practical reskilling programmes for your team or organisation.The Reskilling Program: 90 Days to a New Skill Set$197A self-paced online course in 6 modules and 18 lessons.Reskilling Accelerator: Full Skill Transition Track$1,497The complete self-paced skill transition track: the 90-day course plus the 150-question interview practice pack, in one purchase.Interview Practice Pack: 150 Questions$37150 questions, four answer frameworks and a drill schedule — built for people changing role, sector or career.
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Growth & Strategy
Growth MarketingMove beyond one-off campaigns to a real growth system: channels, loops, conversion, retention, and metrics that actually matter.Campaign ManagementPlan, execute, budget, track, and report on marketing campaigns with real discipline from goal to post-campaign analysis.Online Marketing Blueprint$197A complete, channel-by-channel plan for marketing a small business online - strategy, website, search, social, email and measurement.Personal BrandingDefine a personal brand that's genuinely yours, build a consistent identity and message, and grow real visibility and credibility over time.Visual SEO Masterclass$97Learn the core of SEO through visual maps: keyword research, content clusters, links and reporting dashboards.
Social & Content
TikTok Marketing Mastery$147Learn to plan, film and measure short-form TikTok content that reaches the right audience for your business or brand.Instagram Marketing Mastery$147Learn to position your profile and plan Reels, carousels and Stories that build a real audience on Instagram.Content Strategy & Editorial Planning$97Learn to plan, produce and measure content that serves a clear audience and a clear business goal.Email Marketing Fundamentals$97Learn to build a permission-based email list and send emails people actually want to open.Visual Launch Blueprint$97Plan a digital product launch with visual frameworks: funnels, pricing matrices, timelines and validation checklists.
Sales & Partnerships
Affiliate Marketing Mastery$197Learn how affiliate marketing really works and how to build an honest, compliant content platform around it.Sales Mastery: Close More Deals$197A complete consultative sales process - prospecting, discovery, presenting, handling objections and closing - without the pressure tactics.Negotiation & Persuasion$97Learn to prepare for, conduct and close negotiations in work and everyday life with more clarity and confidence.
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Writing & Design
Creative WritingBuild real creative writing skill — voice, character, structure, and revision — through practical, repeatable techniques.Creative Writing Starter Workshop$37Build a simple writing habit and finish a short piece you are proud of.Graphic DesignLearn the design principles, typography, color theory, and workflow habits that separate professional work from amateur guesswork.Interior DesignLearn to read a space, plan layouts, choose color and materials, and design lighting that actually works for how a room is really used.
Photo & Video
PhotographyUnderstand your camera, master composition and light, photograph people confidently, and build a genuine body of work.Photography Mastery$197From the exposure triangle to a paid shoot - camera craft, light, composition, editing and the business of photography.Filmmaking & Video Production$127Plan, shoot, light, record and edit short videos that look and sound deliberate.Visual AI Bootcamp$75Learn five widely used AI tools through clear infographics, frameworks and diagrams you can refer back to.
Music & Performance
Music ProductionSet up a working home studio, learn real mixing fundamentals, and finish and share tracks with genuine confidence.Music Production & Theory$197Learn the music theory that matters for producers and use it in a DAW - from first beat to a finished, mixed track.Acting & Performance$127Build acting technique from breath and voice to script analysis, character and scene work for stage and screen.
Arts & Lifestyle
Painting & DrawingLearn to genuinely see like an artist and build real skill in line, proportion, value, color, and composition.Cooking Fundamentals$127Learn the knife skills, heat methods and flavour basics that let you cook good everyday food without relying on recipes.Creative Skills Starter Pack (Free)A sampler across writing, design, photography, and music — one quick exercise each — so you can notice which one you lose track of time doing.
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Start a Business
Business Management Fundamentals$197How a business actually runs - planning, people, money and operations - for new managers and owner-operators.Business Law Essentials for Entrepreneurs$197The legal groundwork every founder needs before signing, hiring or selling - in plain English.Business Tools Mastery Suite$197Pick, set up and connect the software stack a small business runs on - and make the tools work together.
Online Income
Making Money Online: Multiple Income Streams$197A realistic map of the main online income models, how to evaluate them, and how to build a second stream without quitting your job.Dropshipping Business Blueprint$197Get a realistic, step-by-step view of how a dropshipping store is researched, built, marketed and run.Affiliate Marketing Mastery$197Learn how affiliate marketing really works and how to build an honest, compliant content platform around it.
Freelance & Services
Property Manager Career Track$127Learn what property managers do day to day, from leasing and compliance to finance, maintenance and residents.Freelancer Business Blueprint Checklist (Free)12 checks before you pitch your first freelance client.Online Tutor Launch Checklist (Free)12 checks before you apply to your first tutoring platform or client.Remote Property Manager Checklist (Free)12 checks to see how ready you are to manage rental properties from anywhere.
Money & Productivity
Financial Literacy$97Understand budgeting, debt, credit and investing basics so you can make more informed decisions about your money.Productivity & Deep Focus$47A short, practical course on protecting your attention — diagnose where your focus actually goes, build a deep work rhythm you can sustain,…Time Management$97Build a realistic planning system that helps you focus on what matters and get important work done.
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Free preview: How traffic flows and where it is exposed — Network Security & Firewall Management

Free preview lesson · Network Security & Firewall Management · Module 1: TCP/IP security and threat modelling

How traffic flows and where it is exposed

Before you write a firewall rule, you need a picture of the traffic you are protecting. Threat modelling turns a network diagram into a list of risks you can act on.

Draw what exists

Sketch devices, connections and where data leaves the network. Gaps in the diagram are often the first findings.

Ask what could go wrong

For each connection, ask who could misuse it and what they would gain.

Rank and decide

Prioritise risks by likelihood and impact, then choose controls such as rules, segmentation or monitoring.

Common pitfall

Starting with tools before understanding the traffic.

Action step

Draw your home or office network and list three ways it could be misused.

This is one lesson from Network Security & Firewall Management.

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