catch-22 and especially house of leaves are two great postmodern* books that i'd recommend for anyone who likes homestuck. house of leave's connections are pretty obvious, and catch-22's giant cast, slowburn pacing, overly convoluted nonlinear plot, unexpectedly comedic focus, and general tone & themes are all very relevant. been meaning to read infinite jest for this reason too!

a little more esoterically i'm also starting to rekindle an old interest in mythology (reading the iliad right now) and given homestuck's place as a "modern creation myth" i wonder what light reading ancient mythology, religious texts, etc will shine on it? probably not that much unless hussie is secretly a religious scholar but the way "god tiers" work is pretty reminiscent of something like the greek pantheon (who are referenced in the browser names!), and i'd like to learn more about gnosticism to maybe 'get' in more detail what's going on with homestuck's gnostic references.