Ecobook: interactive books from RWID Press

Read in your browser or on your phone. The first chapter of every book is free; later chapters unlock with ekoin, no subscription.

• Think Before You Buy

  A calm guide to understanding the stock market

  A calm guide to understanding the Indonesian stock market: what you are really buying, profit, loss and risk, IPOs, how the exchange works, indices, free float and the IHSG–MSCI case, with live charts and interactive simulators.

• Mastering Python Development

  Ecobook Edition

  An interactive Python book from beginner to advanced: 30 chapters with examples you can run right in the browser and a built-in Python IDE.

• Mastering Agentic AI Development

  From vibecoding to Ecosphere

  From vibecoding to building products with AI agents: 20 chapters of practice, workflows and how to ship to production with Ecosphere.

• Mastering Cyber Security in This Crazy World!

  Surviving a crazy world

  Cybersecurity from theory to real incidents: threat models, injection, XSS, sessions and authentication, DDoS, case studies, with live attack simulations.

• Return to Upwork!

  Back, the right way

  Honest notes and a method for finding clients on Upwork again: from the accusation, to the first client, to a repeatable system.