[color="#330099"]You never know when you might need to use a size larger or smaller than the pattern recommends so that you can match the gauge of the project.
I started with a variety pack of 8 crochet hooks; one in each size from D/3 (3.25mm) up to size K/10.5 (6.50mm). It is more thrifty to get a multi-pack. My local Walmarts do have multi-size pack as well as the single hook packs. Walmart does seem to be exclusively Boye by Wrights. Michael's has Boye, Susan Bates, and other brands too.
Good luck with learning both crafts! [/COLOR]