4 classes · first lesson of each free

Programming

Follow what the code is doing, step by step. Variables, data structures, algorithms and the web, explained step by step with code you can follow line by line.

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Programming

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Open a class to see its lessons. Each lesson is a short read with a worked example and three practice questions. Lesson 1 of every class is free.

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Read lesson 1 free
Read lesson 1 free
Read lesson 1 free

The first lesson of every class is free. Vidi Pro opens every lesson in every subject.See Vidi Pro

Programming

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01Variables, loops and functionsWhat a program remembers, repeats and reuses.Lesson 1 free3 lessons

02Lists, dictionaries and treesHow programs organise data so it is quick to find.Lesson 1 free3 lessons

03Sorting, searching and Big-OWhy some solutions stay fast as the data grows.Lesson 1 free3 lessons

04How the web worksWhat happens between typing a URL and seeing the page.Lesson 1 free3 lessons

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