https://thenextweb.com/offers/2019/09/21/choose-your-own-price-on-this-giant-arduino-ebook-training-library/

TLDR: This 15-book Arduino training package helps build hundreds of electronics projects — and you can get it for a price you pick.

For anyone who’s ever looked at a piece of tech and wondered exactly how that miraculous device worked, Arduino should be right up your alley. It’s the open-source electronics platform with a community of innovators who show you exactly how to craft amazing tech creations out of simple boards, circuits and other assorted digital odds and ends.