Stitches to know:
ch - Chain
dc - Double Crochet
sl st - Slip Stitch
hdc - Half Double Crochet
fpdc - Front Post Double Crochet
bpdc - Back Post Double Crochet
dc2tog - Double Crochet Two Together
dc3tog - Double Crochet Three Together
blo - Back Loop Only

This pattern uses US crochet terminology.