I learnt to crochet socks a couple of months ago - here are a few of my finished ones. I use a toe up pattern with a short row heel, so there are no seams to sew and just two ends to weave in at the end. They work up fast and are very portable - I don't need stitch markers or a tape measure (just try them on as I go) so just need yarn and hook! I make them in half treble crochet (UK terminology) so that they are nice and stretchy. I actually prefer them to my knit socks.