My first full size afghan was this Heirloom Sampler Afghan. Each 8" square was a different stitch. It was a GREAT way to teach myself how to read pattern instructions! The picture does not do it justice since it doesn't show the detail of each square but they are all different.
Fast Easy Crochet Baby Blanket – Free Pattern – This Is A Beginner-friendly Crochet Pattern That’s Easy Enough For Anyone To Make. Despite The Skill-level Rating Of “beginner,” I’m Hoping That This Pattern Will Appeal To Crocheters Of Varying Skill Levels