Familiar calculator toolhttp://retrofrog.hardcoreoxygenation.com/kolfamiliars.html
This is a good tool to quickly figure out how to level a familiar in the fewest possible number of turns (or as close to it as possible accounting for the RNG) via the arena. Over the course of the ascensions I did - especially the hardcore oxy ones, this saved me DAYS of wasted turns. Besides being good if you ascend a lot, if you're going for the black hole terrarium, or even just want to have several familiars to cycle through, this will get you there much faster.
A KoL spoilers pagehttp://www.zerokelvin.org/kol.html
While not as thorough as the wiki, this is a great "everything in one place" resource, especially when you just need a refresher on one detail of a quest you've run a bunch of times before.
Subjuntive.net KoL guidehttp://www.subjunctive.net/kol/FrontPage.html
Another handy guide site - again, not as thorough as the wiki, but good when you're trying to find stuff by category instead of the search & pray you're often stuck with on a wiki.
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