Eyelet Rope Stitch - use slip stitches and yarn overs to make a cute faux cable
Knit One Through the Back Loop (k1tbl) - a cute stitch, and a way to undo some mistakes!
Purl One Through the Back Loop (p1tbl) - give your stitch a little twist
I-cords - make little knitted tubes!
Cross Four - elongated stitches that make an X