Anyone in the #PostmarketOS community able to recommend some good "hands on" or (kinda) guided way to learn how to port it to new devices and get to know all of the low level stuff required for it?

Like get this very cheap dev board or phone and this old version of the code and then follow along all of the steps involved in getting #Linux to run on this hardware? (Best for both cases when you have documentation and circuit diagrams and when you don't)

It's such a complex topic that I feel lost