Crochet is much easier than knitting, in my opinion. It’s also more forgiving, however this means that even if you are doing something horribly wrong, the crocheting will still work, it will just look ugly. With knitting you usually get stuck if you are making a mistake, or see quickly that something is wrong with your pattern, but crochet is a bit more difficult to figure out. You often can’t notice when you dropped a stitch and it takes several rows before the gradually shrinking rows become apparent. This means that going back and correcting can be a real pain.
My favorite guide to common crochet mistakes covers most of these issues. Check the link to take a look. Some common crochet problems include holding the hook too tightly or skipping a stitch after the chain when you shouldn’t. Wonky looking amigurumis are often the result of doing the whole thing inside out. As amis have become more and more popular, the number of people looking for tutorials is increasing, as is the knowledge base concerning how to manage these projects.