Instituteofbass.com is a useful site with 22 lessons. The site is aimed specifically at the art of contemporary bass playing and the study of bass tradition. The articles under each lesson are extensive and informative. But, a few of the lessons don’t have tablature which could cause a problem for those who don’t read music, like me!

Below is a screenshot of one of the bass lessons.

Visit Site: http://www.instituteofbass.com

Levels: Beginner, Intermediate

Other Resources:
1. News
2. Reviews
3. Forums