I need help before a gig

[ZachAttack]

I have a my first big gig comeing up in a few weeks, it's going to be Jazz. And i have to walk over alot of chord progressions.
This is my weak point..

Is there a book or method or practice routine of some kind to help me master these chord progressions?
Most of my problems with walking is decideing the notes to choose, and seeing the chord shapes fast enough.

Any help is Greatly Appreciated.

[SuperDuck]

You can start by checking out this article. I found it to be very helpful.

http://www.chrisfitzgeraldmusic.com/...nstruction.htm