Learning and understanding 'how to swing' is the most important part about being a good musician. ... I've listened to okay players that could swing/goove really well and sold me. Then I've heard well schooled players who's swing sounded like someone stumbling down the street. ... Jazz is really about understanding theory well enough to play through any seriers of chord changes at any tempo. ... If you're that interested in playing jazz start with the blues. ... The 'one, four, five' 12-bar chord progression is a great start. ... Find and easy groove and play through that progression till it's flawless. ... Then look up chord substitutes in 12-bar song. 1, 6, 2, 5. ... 3, 6, 2, 5. ... When you understand the difference of the last two progressions you're on your way to playing jazz. ... It's not that hard. ... Grooving is hard so, work on that.