Pattern Stitches
1×1 Rib/2×2 Rib – Ribbing
Garter St – Garter Stitch
P/u (Pu) and Knit – Pick up and Knit
How to pick up and knit stitches in knitting:
Socks patterns and mitten patterns both call for you to pick up stitches.
Top-down socks have a heel flap which usually has a slipped-stitch edge that you need to pick up into, whereas mitten thumbs have a raw edge.