A 60" cord is way too long for a lot of things or until you get more experienced and can use it with advanced techniques. A 29/30" or 32" is a good length that can be used in a lot of ways - for knitting flat, doing a sweater in the round, a smallish blanket or throw, and even for making a hat or mittens. Yes, look around at the local craft/fabric stores and even walmart; a size 10 is a good one to use with medium weight yarn and to learn on. The yarn may say to use an 8, but with a bigger needle the stitches are larger and easier to see and work.
sue- knitting heretic