If you wish to learn about bends etc and are not having lessons buy a good tutor book.
I have bought and used with good results the following:-
1. Blues guitar rules with C.D. by Peter Fischer
ISBN 3-927190-64-0
2. Insude the blues (1942 - 1982) by Dave Rubin
ISBN 0-7935-3611-1
These are are are very good start, but take time and enjoy.
Riff and be merry
While I'm sat here, Playin', I'm tryin' to free my mind!