Watch the Flamenco Flats online guitar lesson by Brad Carlton from Chord Studies: Flamenco Chords Vol. 1
This example is very simple but very effective for evoking the flamenco sound. You'll notice the b2 (F) note gives us the characteristic flamenco sound, coming out of the Phrygian dominant scale. A good exercise would be to practice trilling on and off the F with the fourth finger here.