Welcome. Now, where to begin?
Here is some fantastic music for saxophone quartet, jazz combo, and jazz ensemble. You can check out recordings and scores for every title. And they're all available as PDF Downloads and in printed hard copy.
Here are things I've developed for my own use as a composer and teacher: blank manuscript paper in 10 different layouts, JazzTAB printouts, and a few video lessons for saxophonists and improvisors.
I'm a veteran educator and have worked with students at all levels all over the country. I also work with teachers and music ed majors on implementing creative improvisation into their rehearsals.