If your more directed into the flamenco style of Spanish music, learn to fingerpick.
Just some techniques you might want to look up :

Tremolo - playing treble as rythem with your index, ring, and middle fingers and bass as lead with your thumb.
E||------------------------------------------------------------------|
B||----5-5-5---5-5-5---5-5-5---5-5-5---3-3-3---3-3-3---1-1-1---1-1-1-|
G||------------------5---------------4-------------------------------|
D||----------2---------------2---------------2---------------2-------|
A||--0-----------------------------------------------0---------------|
E||------------------------------------------------------------------|

Rasqueado - Spanish strumming. Strumming with your Index, Pinky, Ring, Middle, and back to Index in that order. Do that fastly and stronly.

E||--0-0-0-0-0---------------------------------------------
B||--0-0-0-0-0--------------------------------------------
G||--1-1-1-1-1---------------------------------------------
D||--2-2-2-2-2-----------------------------------------------
A||--2-2-2-2-2------------------------------------------------
E||---------------------------------------------------------