Purposeful Ramblings Through My Mind

You need to be able to manipulate a hook with one hand and yarn with the other; if you can knit either left- or right, you should be able to crochet either way, too. Only problem is that patterns are written for right-handed people. Most of the time it doesn't make a difference - I mentally switch them over if necessary, but it's not often - but once in a long while, I'll come across one I can't do at all. Still, those are rare, and very detailed patterns, and in ten years it's only happened twice.