Build
Web3 developer foundations
Tools and reflexes to move from an idea to a verifiable program.
What You Can Do
Build an exact amount converter, test it and document how to reproduce it.
Prerequisites
Know how to use files and a browser.
Know how to use files and a browser.
5 lessons~ 3 h 40 of study and practice5 quizzes with explanationsUpdated on 18 September 2026
LEARN BY DOING
An exact amount converter with tests
5 questions per lesson · 80% required to pass · guided project with a 20-point rubric
Estimated study time includes reading, exercises, quizzes and the project. Tool installation and further practice may take additional time.
See the guided projectYour program
01Variables, types and unitsReading · exercise · quiz · 40 min · free preview
02Functions and conditionsReading · exercise · quiz · 35 min
03Git and reproducibilityReading · exercise · quiz · 35 min
04APIs, RPC and asynchronous operationsReading · exercise · quiz · 40 min
05Testing and error handlingReading · exercise · quiz · 70 min