OK, lets back up a bit and take another look at this.
First theory is best learned from a theory paper while sitting in an easy chair, with your instrument close at hand. Thirty minutes a day, every day, for the next couple of months. A number 2 pencil for notes in the margins is recommended. Asking general theory questions
on the Internet will get you bits and pieces of the story. Bits and pieces confuse more than help. You need to start on page one of that paper fearceol gave you. Speed read till you have to slow down. What you read today may not sink in till you read something a week from now and THEN the light will come on. It's a journey best taken one step at a time. Now asking specific questions
on the Internet; those can be answered. www.stidybass.com
will be a friend.
The book "Bass Guitar for Dummies, no pun intended, will have all the beginning "stuff" you need to get started on the bass guitar. I do not recommend the Kendal version, you need the DVD that comes with book for how things are supposed to sound.