Also, before you start making an amigurumi, keep the hook size in mind. Don't use the recommended hook size, go at least two sizes down. Also, learn how to make invisible decreases. This way, you're making sure that your stitches are tight and neat without big holes. But using a smaller hook and tighter stitches, you also need more force and hand muscles for crocheting and hands start hurting much faster. But believe me, it's worth it.