These are good, thank you.

About epistemic vs. instrumental rationality, though: I had never heard those terms but it seems like a pretty simple difference of what rationality is to be used for. The way I understand it, Less Wrong is quite instrumentally focused. There are many posts as well as sequences (and all of HPMOR) about how to apply rationality to your everyday life, in addition to those dealing only with technical probabilities (like Pascal's Mugging—not realistic).

Personally I'm more interested in the epistemic side of things and not a fan of assurances that these sequences will substantially improve your relationships or anything like that. But that's just me.