I've had to be a self taught Bassists only because the few lessons I did take were with Guitar teachers that never helped me. I'm going to make a thread that has some easy bass lines and instruction that I've found that has helped over the years.
Bunny Brunel has a great site...
http://www.cyberschoolofbass.com/lesson6/
Active Bass- and guitar
http://www.activebass.com/
http://www.activeguitar.com/
Tabs that I still have and practice that are fun and fairly easy to learn
The Hives-Die Alright
Wilco - Hand shake drugs
The Kings of leon-King of the Rodeo
Weezer-Hash pipe
Arctic Monkeys - A certain romance