Lion Brand has a clear and simple booklet that you can view and print.
Simply knitting published a full-color booklet that is clear and surprisingly detailed at only 16 pages long.
Books about Crochet
Blueprint Crochet by Robyn Chachula on Ravelry: Garments in charted format.
The Happy Hooker by Debbie Stoller : Great reference with written, illustrated, and charted instructions.