Jazz... it's not that i'm good at it already (i'm still learning) but to learn jazz you need to....
Read about jazz ( jazz books are hard to find here... it's either you go abroad or better yet, download ebooks
)
Listen to Jazz (listen intently... take note of each player's style and also take note of the differences of each type of jazz)
Play Jazz (this is the hard part specially if you are too young to have jazzaholic friends. if this is the case then you are probably stuck (like me) with progheads(no offense.. i like prog too but, i wanna play jazz.. hehe), yngwie malmsteen worshippers, double peds fanatics and all those fast-paced action music lovers