Start with Polymer Clay Project: Modern Heart Pendants Tutorial (63 min, Jessama Tutorials), then Polymer Clay - Basics and Techniques (16 min, Fire Mountain Gems). All 741 lessons here are free, from the teachers' own official uploads. You'll need polymer clay starter set, acrylic clay roller, clay cutter set and a few more basics (about $90 of kit). The book to keep beside you: The Polymer Clay Techniques Book by Sue Heaser.