I’ve created many step-by-step photo and video tutorials that you can use to help you out, if you need it. If you’re a complete beginner, you’ll want to start with the Basics section, then move to Amigurumi Essentials. You can find them all at www.planetjune.com/help.
You might also like to look at my book, The Complete Idiot’s Guide to Amigurumi. It’s a very useful reference book to keep at hand, as it includes a primer on yarn, hooks and stitches; easy-to-follow tutorials for getting started, increasing and decreasing, working in the round, changing colors and more; expert advice on adding eyes, hair, jointed limbs, clothes and other fun accessories; tips for following an amigurumi pattern, and four start-to-finish patterns.
Or if you’re brand new to crochet (and not just amigurumi) you may prefer to start with my latest book, Idiot’s Guides: Crochet, which will guide you from the most basic principles of crochet through hundreds of ultra close-up, full colour photos – it’s the best way to learn to crochet short of taking from a personal lesson directly from me (which I’m afraid I can’t offer!)
See also my advice on which PlanetJune patterns are best for beginners.