Being a someone who is kinda new to the terminology of computer science i find that in nim the documentation may be perfect for seasoned people who have a clue, but i did not at first. Till i started searching individual topics like, hygenic macros and such.
So my suggestion to add to this is that while maybe, documentation that approaches the novice or noob have an appendix of the explanations of the terminology that is used in the documentation on this website. I wish i would have had it, and maybe i still need it? i dunno, i like all the ideas here and would like to help but i am not self confident enough to volunteer yet. i like jlp765's idea of a periodic "lets figure this out together moment". maybe based on problems people from other languages who do not know nim so well like me, need to know. For instance maybe pointer arithmetic... its different in c than in nim to do it. i think without someone like Araq showing how to do it would be a challenge to say the least, for me at least i know! But in the same though maybe a category like "coming from c to nim" or "from python to nim" would be good. i think some stuff is like that on github already.
