I was browsing knitting podcasts and came across this gem:
let me explaiKnit

It's got detailed notes on several knitting issues and I've not read them all yet! I hope she's got a tutorial in there somewhere for circular needles…What a find!

Edited to add:
I got the link from Pointy Sticks.
There's so much knitting wealth out there. Where have I been all this while?!

Then there is Nona as well.