Ever wonder what the difference is between sock weight and worsted weight yarn?
Well I certainly did. Thanks to the Internet, I have an answer! And a well presented one at that.
The Yarn Standards website has a table describing each weight of yarn, as well as what needles are appropriate to use with them (both knitting and crochet needles).
I guess once I’ve spun some yarn, I can knit it up and see what weight of yarn it was!