Jazz is an amazing language that deals with energy. in NYJA they have many free videos of online classes, resources for theory and so much more. I study with them in one of their group workshops, started from very little and now I am able to express my self much more with my instrument. It is totally worth it, to check them out. Let me know if you have any questions. Free resources are under resources in their website and not in the link I directly posted.
added: 03/25/2013 by Marcela Rivera
Volume 1 of this educational jazz piano book contains 15 jazz piano exercises, tricks, and other interesting jazz piano techniques, voicings, grooves, and ideas Scot Ranney enjoys playing.
Volume 2 has 14 jazz piano exercises and tricks of the trade, and quite a bit of it is Calypso jazz piano related material, including some Monty Alexander and Michel Camilo style grooves. Jazz piano education is through the ears, but books like this can help.
Volume 3 contains 12 jazz piano exercises and explorations by the acclaimed jazz piano educator, pianist, author, and recording artist Tim Richards.
Volume 4 is by Jeff Brent, a jazz pianist, composer, teacher, and author of "Modalogy" and other acclaimed jazz theory and education books. In this book Jeff shares detailed analysis of transcriptions of live performances. He covers everything from the shape of the songs to the tricks and licks he uses in improvised lines to the ideas behind his lush chord voicings.
Jeff Brent's Jazz Piano Notebook
Fundamentos Físicos del Sonido
Aprendiendo a tocar PIANO gratis con partitura
5 Pro Tips for Practicing Jazz Piano
"Danny Boy" Jazz Leadsheet
Tim Richards' Jazz Piano Notebook