If you're looking for ways to learn to crochet amigurumi, books are a good source.  This is how I got started. If you're an independent learner books are your friends. You can buy ami books from craft stores or general merchandise stores. But the best place to get started for free is at the public library.  You don't have to break the bank for a library loaner.  There is such a wide selection to choose from that you may end up with a collection before you know it.  Here is a list of books that my library offers:

• Amigurumi World: Seriously Cute Crochet by Ana Paula Rimoli
• The Complete Idiot's Guide to Amigurumi by June Gilbank
• Amigurumi Toy Box: Cute Crocheted Friends by Ana Paula Rimoli
• Amigurumi Two!: Crocheted Toys for Me and You and Baby Too by Ana Paula Rimoli 
• Voodoo Maggie's Adorable Amigurumi: Cute and Quirky Crocheted Critters by Erin Clark 
• Amigurumi!: Super Happy Crochet Cute by Elisabeth A. Doherty 
• Amigurumi  by Lan-Anh Bui and Josephine Wan
• Super Cute: 25 Amigurumi Animals by Annie Obaachan
• Knitting Mochimochi: 20 Super-Cute Strange Designs for Knitted Amigurumi by Anna Hrachovec 
• Crobots: 20 Amigurumi Robots to Make by Nelly Pailloux
• Tasty Cute: 25 Amigurumi Gourmet Treats by Annie Obaachan
• Ami Ami Dogs: Seriously Cute Crochet by Mitsuki Hoshi
• Yummi 'Gurumi: Over 60 Gourmet Crochet Treats to Make by Christen Hadenand Mariarosa Sala
• Kyuuto! Japanese Crafts!: Amigurumi by Tomoko Takamori
• Tiny Yarn Animals: Amigurumi Friends to Make and Enjoy by Tamie Snow
• Scary Cute: 25 Amigurumi Monsters to Make. by Annie Obaachan
• Tasty Crochet: A Pantry Full of Patterns for 33 Tasty Treats by Rose Langlitz
• Twinkie Chan's Crochet Goodies for Fashion Foodies: 20 Yummy Treats to Wear by Twinkie Chan