[min7b5]

I would find a good teacher in your area (or online) and tell them you want to go through Autumn Leaves in chords, a few different ways. It's a good study tune that has both major and minor ii V I's, doesn't really change keys, it's in a guitar friendly key.. But learn chords and everything else in the context of a tune (in my opinion you should read that sentence two more times). And just live in the one tune for a month or more, until you and everyone around you is ready to go bananas... Then later, as you do add new tunes, each will come together more quickly -ultimitly I try to get students to make a list of ten tunes to focus on for a year as a pretend set list... But if you are just memorizing chords by rote and playing them into thin air.... It's gonna take forever.