The number and volume of materials on PureData is gradually increasing, it is time to collect them in one place. This is a kind of post-content of articles I have written. Many of the principles and ideas described in them are suitable not only for PD, but also for any MAX-like language. Good luck with the experiments.
Remember. The most interesting thing in PureData is experiments and the ability to link the most varied principles and approaches of working with sound (and maybe video, but this topic is not just a separate article, but a whole book) in one patch. Watch video demonstrations, try different combinations, remember the course of mathematical physics and turn your patches from “bikes” into real spacecraft.