can be done using any size yarn and hook. For this pattern I used worsted weight yarn 4 ply for the US and 10 ply for AU and a 5mm / H hook.
Ch = chain
sk 2 sts = Skip Two Stitches
sc = single crochet
TRC = Triple Crochet
DC = Double Crochet
FPDC = Front Post Double Crochet
BPDC = Back Post Double Crochet
THE TUTORIALS:
RIGHT HANDED VERSION
LEFT HANDED VERSION