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Guides are grouped into courses. Start at Part 1 of a course and work your way down, or jump to any topic.
DSA for Beginners
Data structures & algorithms, visualised and made unforgettable. 4 guides · 39 min.
Big O Notation Explained Simply (Graph + Examples)
Big O notation explained for beginners: what O(1), O(log n), O(n) and O(n²) mean, a growth graph, code examples, and a memory trick so you never forget the order.
Read guideStack vs Queue: Difference Explained (With Animation)
Stack vs queue in data structures, explained simply: LIFO vs FIFO, push, pop, enqueue and dequeue, a difference table, code in Python, Java and C++, and a memory trick.
Read guideBinary Search Algorithm Explained (Time Complexity + Code)
Binary search explained for beginners: how it works step by step, why its time complexity is O(log n), code in Python, Java and C++, a visual demo and a memory trick.
Read guideSorting Algorithms Explained: Visualization & Time Complexity
Sorting algorithms explained with a live visualizer: bubble, selection, insertion, merge and quick sort, a time complexity table, merge sort code and a memory trick.
Read guideAI for Beginners
How today's AI tools really work, in plain English. 5 guides · 47 min.
What Is Machine Learning? Explained Simply (With Demo)
What is machine learning? A plain-English guide to how computers learn from examples, the 3 types of ML, everyday examples, and a live spam-filter demo.
Read guideHow Does ChatGPT Work? LLMs Explained Simply
How does ChatGPT work? A plain-English guide to large language models: tokens, next-word prediction and training, with a live tokenizer and word predictor.
Read guidePrompt Engineering for Beginners: 7 Tips That Work
Prompt engineering for beginners, made simple: 7 practical tips, before-and-after prompt examples, a free prompt template and a live prompt builder to try.
Read guideWhat Is an AI Agent? A Beginner's Guide (With Demo)
What is an AI agent? Learn how AI agents work, how they differ from chatbots, and see real examples, with an interactive demo of the agent loop.
Read guideHow Do AI Image Generators Work? Diffusion, Visually
How do AI image generators work? A friendly, visual guide to diffusion models: how words become meaning, how noise becomes a picture, and how to prompt better.
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