Besides the beginner projects here, have you considered practicing on dishcloths? They’re small, varied, and can be made of inexpensive cotton so you don’t feel like you’re wasting money.
Also, here’s a link to the abbreviations stuff on this web site. I kinda ignored it for a while but then I noticed that not only does it explain the abbreviations, it links directly to the videos that show you what to do! Woo-hoo!