If learning to code is on your 2018 new year’s resolution lists, the latest Humble Ebook Bundle is a must-buy. Pay what you want for nearly 20 different DRM-free ebooks, with some available for as little as $1. You’ll unlock all four tiers starting at $18, and a portion of the proceeds will go to charity too.

And in case you missed it last week, you can still get Humble’s Maker Skill Builder ebook bundle, with a ton of titles from Make:.