reinforcing technique for handknit areas you know will get a lot of wear - an ounce of prevention and all that.
16 different ways to knit a heel on a sock - half are toe-up, the other half cuff-down. Ravelry project page
How to Knit a Perfect Edge
Knit-Front-Slip-Back A neater and easier alternative to the KFB increase.
100+ Crochet Stitch Symbols
When I get a little better at socks, I must come back and try heelix heel-out socks!
Lifestyle Toe Up Socks - No Swatch Needed
vintage knitting patterns at the V&A http://www.vam.ac.uk/content/articles/0-9/1940s-knitting-patterns/:
Ravelry: ElsaLemons Elsas first socks The long ribbing, the colours, beautiful.