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AI & Data Scientist
Turn vague questions into tested, trustworthy answers
THE PEBELLS COURSE LIBRARY
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From your first line of code to the ideas that explain our world. Find a course, explore the outline, and make it your own.
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Start with what interests you. Learn through ideas, practice, and building.86 ready to learn 94 courses to explore
Courses
Find your next starting point94 courses to explore
Ready to learn
AI & ML Skills
AI Agents
Understand, design and safely run LLM agents that use tools
Ready to learn
Roles
AI Engineer
Build reliable apps on top of large language models
Ready to learn
AI & ML Skills
AI Product Builder
Take an AI product idea from problem to tested, working app
Ready to learn
Roles
Android
Build and reason about real Android apps from the ground up
Ready to learn
Frameworks
Angular
Build component-based web apps with modern Angular and signals
Ready to learn
Roles
API Design
Design web APIs that are clear, safe and easy to build on
Ready to learn
Frameworks
ASP.NET Core
Build a real web API in C# on modern .NET, one rule at a time
Ready to learn
DevOps & Cloud
AWS
Run a real website on AWS: servers, networks, access and storage
Ready to learn
Roles
Backend
Understand the web's plumbing and build APIs that hold up
Ready to learn
Roles
BI Analyst
Turn business questions into trusted KPIs, dashboards and decisions
Ready to learn
Roles
Blockchain
Understand how blocks, hashes, keys and consensus fit together
Ready to learn
Languages
C
Write, build and reason about small, fast C programs
Ready to learn
Languages
C++
Read, write and reason about everyday modern C++
Ready to learn
Other Skills
Claude Code
Steer an AI coding agent with clear asks, safe limits, real checks
Ready to learn
DevOps & Cloud
Cloudflare
Build and ship apps on Workers, KV, R2, D1, Durable Objects and Queues
Ready to learn
CS Fundamentals
Computer Science
See how computers store numbers, text and time costs
Ready to learn
Languages
CSS
Style any web page with rules you can read and reason about
Ready to learn
Roles
Cyber Security
Understand the threats and protect a small organisation, calmly
Ready to learn
Roles
Data Analyst
Turn raw tables into clean numbers and honest answers
Ready to learn
Roles
Data Engineer
Move raw data into shapes people can trust and use
Ready to learn
CS Fundamentals
Data Structures & Algorithms
The toolkit behind fast software
Ready to learn
Other Skills
Design System
Build the shared rules and parts that keep a product consistent
Ready to learn
Roles
Devops
Run, ship and fix software on real servers with confidence
Ready to learn
Roles
DevRel
Help developers succeed, and bring their voice back to the product
Ready to learn
Roles
Devsecops
Build security into every stage of the delivery pipeline
Ready to learn
Frameworks
Django
Build a working Django site from an empty folder to tested views
Ready to learn
DevOps & Cloud
Docker
Package, run and keep data for apps in containers
Ready to learn
Data & Databases
Elasticsearch
Store, map and search documents with Elasticsearch
Ready to learn
Roles
Engineering Manager
Lead an engineering team: people, delivery and technical health
Ready to learn
Frameworks
Flutter
Write Dart, build widget screens, and ship a tidy Flutter project
Ready to learn
Roles
Forward Deployed Engineer
Embed with customers and make the product work in their world
Ready to learn
Roles
Frontend
Build, style and ship a real website from first request to push
Ready to learn
Roles
Full Stack
Connect browser, server and database into one working app
Ready to learn
Roles
Game Developer
The maths, loop and physics that run inside every game
Ready to learn
Other Skills
Git and GitHub
Track every change, branch safely and share work on GitHub
Ready to learn
Languages
Go
Read and write everyday Go: types, strings, slices, maps, structs
Ready to learn
Data & Databases
GraphQL
Ask an API for exactly the data you need, in one request
Ready to learn
Languages
HTML
Write clean, semantic web pages that every browser understands
Ready to learn
Roles
Ios
Understand Swift, Xcode and how an iPhone app really runs
Ready to learn
Languages
Java
Write, organise and debug everyday Java programs with confidence
Ready to learn
Languages
Javascript
Read and predict everyday JavaScript: values, types and equality
Ready to learn
Languages
Kotlin
Write clear, safe Kotlin: values, types, collections and control flow
Ready to learn
DevOps & Cloud
Kubernetes
Run, update and connect containerised apps on a cluster
Ready to learn
Frameworks
Laravel
Build and route a Laravel app, from install to controllers
Ready to learn
Other Skills
Leetcode
Spot which pattern a coding problem needs, then solve it fast
Ready to learn
DevOps & Cloud
Linux
Move around, edit, secure and query files from the shell
Ready to learn
Roles
Machine Learning
The maths, statistics and core ideas every ML engineer builds on
Ready to learn
Math
Mathematics
Numbers, from the first count to the fast way
Ready to learn
Roles
MLOps
Take a model from notebook to a monitored service you can trust
Ready to learn
Data & Databases
Mongodb
Model, query and index documents in MongoDB with confidence
Ready to learn
Roles
Network Engineer
Read, address and reason about any network, from cable to subnet
Ready to learn
Frameworks
Next.js
Build fast React sites with routing, rendering and APIs built in
Ready to learn
Other Skills
Openclaw
Run your own always-on AI agent and reach it from your chat apps
Ready to learn
Languages
PHP
Write server-side PHP that builds pages and handles forms safely
Ready to learn
Roles
PostgreSQL
Install, configure, secure and back up a PostgreSQL server
Ready to learn
Data & Databases
Power BI
Load, clean, model and measure data for reports people trust
Ready to learn
Design
Product Design
Frame the right problem, design the fix, and prove it worked
Ready to learn
Roles
Product Manager
Find the right problem, know your market, and set a clear vision
Ready to learn
AI & ML Skills
Prompt Engineering
Write prompts that get reliable, checkable answers from LLMs
Ready to learn
Languages
Python
The one course everything else needs
Ready to learn
Data & Databases
Python for Data Analysis
Load, clean, summarise and chart real data with pandas
Ready to learn
Roles
QA
Think like a tester: plan, design and run tests that find real bugs
Ready to learn
Data & Databases
R Programming
Write R code to store, reshape and summarise real data
Ready to learn
Frameworks
React
Build interactive web interfaces from small, reusable components
Ready to learn
Frameworks
React Native
Build real iOS and Android screens with React and Expo
Ready to learn
Data & Databases
Redis
Store, count, rank and queue data in memory with Redis
Ready to learn
Languages
Ruby
Write clear everyday Ruby: values, operators, choices and loops
Ready to learn
Frameworks
Ruby On Rails
Build a database-backed web app the Rails way
Ready to learn
Languages
Rust
Write fast, memory-safe Rust and understand what the compiler wants
Ready to learn
Languages
Scala
Write clear Scala 3: values, types, choices, collections and loops
Ready to learn
Career
SEO
Help the right people find your pages, without tricks
Ready to learn
Roles
Server Side Game Developer
Build fair, fast multiplayer servers: ticks, TCP, UDP and sockets
Ready to learn
Languages
Shell / Bash
Turn the commands you repeat into scripts that run themselves
Ready to learn
Roles
Software Architect
Shape systems, weigh trade-offs and make decisions that last
Ready to learn
Other Skills
Software Design Architecture
Write code that stays easy to read, change and extend
Ready to learn
Frameworks
Spring Boot
Build, secure and run a Java web service with Spring Boot
Ready to learn
Data & Databases
SQL
Design tables, change data, and ask real questions of it
Ready to learn
Languages
Swift & SwiftUI
Read and write the Swift that every SwiftUI app is built on
Ready to learn
CS Fundamentals
System Design
Reason about scale, failure and trade-offs like a system designer
Ready to learn
Roles
Technical Writer
Write docs that help real readers get real work done
Ready to learn
DevOps & Cloud
Terraform
Describe cloud infrastructure in code and build it safely
Ready to learn
Languages
Typescript
Add types to JavaScript and let the compiler catch your mistakes
Ready to learn
Roles
UX Design
Design products that help people do what they already mean to do
Ready to learn
Other Skills
Vibe Coding
Build software with an AI assistant and still own every line
Ready to learn
Frameworks
Vue
Build reactive interfaces from small, well-behaved Vue components
Coming soon
Roles
AI Red Teaming
Career-shaped bundles — everything one job needs.
Coming soon
Beginner
Backend Beginner
The first steps, before anything else makes sense.
Coming soon
Other Skills
Code Review
Skills that don't fit neatly anywhere else yet.
Coming soon
Beginner
Devops Beginner
The first steps, before anything else makes sense.
Coming soon
Beginner
Frontend Beginner
The first steps, before anything else makes sense.
Coming soon
Beginner
Git Github Beginner
The first steps, before anything else makes sense.
Coming soon
Frameworks
Node.js
Tools built on top of a language for a specific job.
Coming soon
Other Skills
Wordpress
Skills that don't fit neatly anywhere else yet.