Grandma's Favorite Dishcloth
is a great pattern. You can learn and get used to yarn overs (yo) for increasing and then work on doing decreases. It's versatile too. Use it to make a dishcloth or washcloth or make it bigger and make a blanket, work just the first half and then bind off and you have a triangular shawl. There are lots of other patterns you can use to practice all kinds of stitch patterns. It's kind of fun really.