EASY: Chain, Slip Stitch, Single Crochet, Half Double Crochet, Double Crochet
Beginner: Chain, Slip Stitch, Single Crochet, Half Double Crochet, Double Crochet, Combinations of these stitches, Increases and Decreases of these stitches. Crocheting in the Round, Color Changes at the the beginning of a row.
Intermediate: Combinations Stitches, Netting Stitches, Bobble and Puff Stitches, Increases and Decreases, Crocheting in the Round. Color Changes anywhere, Carrying Two Yarn Colors.
Advanced: Many stitches, specialty stitches listed int eh pattern, many color changes, patterns that require intense focus.