So! I'm biased and would say if you're going to be looking at Torii then try to chew on the existing docs and if there are any sharp edges and weird things or something is confusing then to just ask me! (as i'm one the of maintainers of that particular one, lol)

For any of the others, I can really only really suggest reading the docs and seeing if they have a support IRC/Matrix channel or something and ask there ^^;