Long and Short Hat is a great beginner pattern for adding a bit of texture and getting practice using a chart.
This pattern is available for two weights of yarn. Worsted or DK weight

Difficulty Level:
Beginner

Skills Required:
Knit, purl, cast-on, cast-off, k2tog, Working-in-the-round.

Materials:
Worsted Weight Version
Approximately 100(110, 130) m/ 110(120, 142) yards of any worsted weight yarn
4.5 mm/US 7 40cm/ 16 inch circular needle
DK Weight Version
Approximately 160(180, 200) m/ 175(197, 219) yards of any DK weight yarn
4.0 mm/US 8 40cm/16 inch circular needle

Size:To fit average adult head S,(M, L) approximately 20in/51cm(22 in/56 cm, 24 in/61cm)

Gauge:
Worsted Weight Version: 20 stitches to 4 inches/ 10 cm over pattern stitch in the round after blocking
DK Weight Version: 24 stitches to 4 inches/ 10 cm over pattern stitch in the round after blocking

See also Long and Short Scarf