lots of free resources available above but considering Eric went to the bother of making the cheet sheet free why not link to his book, I might even buy it myself…
with thanks to @DiRoots for twitter and @jose.oliveiraJXEPU for linkedin posts
Python use in Dynamo is really growing which is a good sign. Here’s a my AU class about using Python for Dynamo which is meant to build up your skills with the software. It starts from basic fundamentals and builds to more complex examples.
There is also my presentation from AU London 2018 on Python in Dynamo for Beginners
You can also access a bunch (65+) of heavily annotated Python scripts in Dynamo from 11+ contributors here: https://github.com/Amoursol/dynamoPython - huge shoutout to all who contributed!