This video is very good and shows very clearly how to make the stitch.
You can also find clear written instructions with pictures here!
I often use this stitch on hats when I do edging or the ear flaps. The stitches are smaller and closer together, which means smaller holes.. which means.. warmer ears! I found a good beginner scarf pattern that is very basic and uses the single stitch almost exclusively, so you get really good practice.. and a scarf as well. It is found here: Beginner's Free Crochet Scarf Pattern.
If you have any questions ask away! We are here to help :)