It helped that I already knew how to knit in the round on fixed circulars. After that, I learned how to knit socks using the 4 DPN method (three needles holding stitches and one working needle), because it seemed less overwhelming and I used Silver's Sock Class.
and sport weight yarn. I got it right on the first try.
If DPNs aren't really your thing, you could learn Magic Loop, which uses only one pair of long (32" or longer) circular needles. Once I learned ML, I never used DPNs again.