I Wish I Knew How To… Program Threads and Timers with Xojo Desktop has been released with version 1.0 for October 2017. There are 5 chapters in the book and 13 example programs.
Threads are used to run calculations and other code in the background, while timers update the GUI based on calculations from the thread. Threads and Timers functionality complement each other. This book introduces some of the many ways to use these two controls.
This book is free and is in PDF format with all examples including Xojo code. No plugins are needed with this book. Code has been tested with Xojo 2017 R2.1 on Windows 10, Mac High Sierra, and Linux Ubuntu in both 32-bit and 64-bit mode.
The book and examples can be downloaded by visiting the authors website at http://scispec.ca and click on the books link to find the Threads and Timer book.