You shouldn't be 'learning jazz beats' at all. In fact you should be comping spontaneously rather than playing for scripted - that requires left handed co-ordination.
I actually ment it like that....i dont really learn jazz beats off musicians, mabye some ones, but i just experiment...
when i said that i just really ment getting good syncopation, i did'nt mean actually scripted out manuscripts.....to have a good left hand in jazz you should be able to do what you want with the left hand!...meaning long hours of practicing co-ordination
....although i have heard good things about books like beyond bop drumming and so forth