Free on Kindle, July 17–19: Building Your Own Crypto Trading System

For three days — July 17–19, 2026 (PDT) — my book Building Your Own Crypto Trading System is free on Kindle. If you've ever wanted to see how a personal crypto auto-trading system is actually designed, backtested, and run 24/7 — in real Python code — this is a good moment to grab it.

Get it free on Kindle (July 17–19, 2026 PDT) →

What the book is

Building Your Own Crypto Trading System — Design, Backtesting, and 24/7 Operation in Python walks through a personal BTC/ETH auto-trading system I've built and run for years: the strategy, a backtester that replays the past with the exact same code as production, parameter optimization that avoids overfitting, dynamic capital allocation, and the operational side — absorbing differences between exchange APIs and running it across multiple machines around the clock.

What sets it apart is that it's a transparent record of design and failure, not a success story. Dead ends get top billing: a 1,800-line market-regime detector scrapped for overfitting, an optimizer that misjudged a 98% drawdown as a good score, and more. And the trading "brain" is no flashy AI prediction — it's plain indicators (Bollinger Bands and a linear-regression trend) organized into prioritized rules. The stance is "don't let AI predict the market; use it to build the system."

There's a twist to how the book was made, too: the text, illustrations, and cover were written by AI (Claude Code), with me setting the direction and making the final calls. I wrote up that process separately — I Used Claude Code to Write and Publish a Whole Book on My Crypto Auto-Trading System.

The free campaign

• Free: July 17–19, 2026 (PDT), three days
• Normally: $9.99 (also in Kindle Unlimited)
• Where: Amazon Kindle

If you find it useful, an honest review would mean a lot — it's a brand-new release with no reviews yet.

Note: neither this article nor the book recommends buying or selling any specific crypto asset, and neither is intended as investment advice or solicitation. Any figures shown are results of backtesting / optimization on past data, and do not guarantee future profit or realized returns. Crypto trading carries price-volatility risk. Make your own decisions at your own responsibility.