Ear Without Fear - Vol. 1: Solfege: Theory

You will find this series easy to use. To use the books effectively you will need a pitch pipe or your instrument and access to a computer. Each chapter is divided into smaller sections. This allows you to focus on one section for a short period of time. Working in small sections is more valuable than trying to cover large amounts of material. Learning this way lays a good foundation as you continue to build you skills.