Moodle Add-ons was one of the most valuable Moodle books I’ve read over the last few years, not only for the in depth reviews of leading plugins, but for the guidelines put forth for reviewing, testing and implementing 3rd party plugins on your own site. For $9.99 it’s a steal.
The Kindle ebook version is now available for Moodle Add-ons by Gavin Henrick and Michael de Raadt. Get your copy here: