Reddit mentions of The Jazz Musician's Guide to Creative Practicing

One of the best books I've read on the topic is David Berkman's [Jazz Musician's Guide to Creative Practicing] (http://www.amazon.com/Jazz-Musicians-Guide-Creative-Practicing/dp/1883217482/ref=sr_1_1?ie=UTF8&qid=1451912483&sr=8-1&keywords=creative+practicing+jazz).

So, from my lessons with Donald Brown (pianist with Art Blakey group for a while) I kinda reverse engineered how one usually splits their jazz practice. I only played classical piano until my sophomore year in college, so I can understand some of the frustration you might have.

You have four areas, with transcribing being a huge part of all of them:

1. Tunes (Melody played by itself in unison LH and RH to work on phrasing/rhythmic variations. Then as you would play it in a piano trio and finally as a solo piano arrangement)
   
   
2. Voicings (2-5-1 patterns you transcribe/create or just 1 voicing taken through 12 keys then applied to tunes)
   
   
3. 1/2-2 measure melodic lines (usually transcribed)
   
   
4. Scale patterns (Major, Melodic minor, diminished)
   
   The first two are the most important. In any given tune, if there's a horn player, we spend about 70% of the tune's length comping. Also, nothing else you practice matters if you don't get used to applying everything to tunes.
   
   For the melodic lines, I have a notebook full of short 1-4 measure lines over various chord progressions that I've straight up stolen transcribed from other players or made up myself. Write the chord tones over the notes to make it easier to transpose. Ex) for C7 C-B-Bb-D-A-G is 1-b1-7-9-6-5. Practice that in twelve keys, start with shorter ideas at first. Then try applying the line to every spot in a tune's progression that it can be applied. Improvise in the gaps, but make sure to get back to the non-improvised line whenever you should! This trains your inner ear to hear this line as a part of your jazz vocabulary and will help it come out naturally while improvising.
   
   Scale patterns are 2-6 note ideas that are diatonically sequenced through a scale. For jazz, you basically need the major scale, melodic minor ascending, and diminished (octatonic) scale. Again, I have that notebook full of scale patterns. They're good for playing a lot of notes in a measure when you want that effect.
   
   Ex) Ascending 3rds (all single notes): C-E-D-F-E-G-F-A. Descending: E-C-D-B-C-A...
   
   This [book] (http://www.brownman.com/storage/temp/Patterns.For.Jazz.pdf) (Jerry Coker Patterns for Jazz) is full of these patterns, which can be very useful. These are your new Hanons. Look at #38-43 for more of what I'm talking about.
   
   I hope this helped! I remember struggling with wondering how to practice jazz for quite a few years, so I always try to help those who are a little lost like I was. Good luck!