Although people are responding now, I see that you posted this over two years ago. Did you continue in your quest to learn Flamenco?
If not, “Flamenco Guitar Basic Techniques” with CD by Juan Serrano is an excellent way to learn Flamenco. The book starts with many rasgueado, tremolo, legato and arpeggio exercises followed by 11 typical Flamenco pieces (Sevillanas, Farrucas, Soleares etc.). All the exercises and repertoire pieces are on the CD, so you can play along with Serrano. He explains the rasqueados technique very well. Spend time practicing these with the CD until you “get it”. The repertoire pieces are easy to read and memorize and sound more complicated than they really are.
Let us know how you are doing and if we can assist you.