Reddit mentions of The Elements of Music: Concepts and Applications, Vol. I

I dont know any as I taught myself based on my knowledge of other instruments. I would recommend if you are going to do it to spend your money on a real book sixth edition to get a bunch of jazz melodies/chords and irealpro to practice soloing over them. I think the embouchures pretty similar so you shouldnt need much besides forcing yourself to actually use the slide (jazz tunes tend to go through a few keys so you will get a slide workout). Some of the guys on slidemeister have strong opinions on chromatic books if that peaks your interest.

If you ever want a theory book I recommend: https://www.amazon.com/Elements-Music-Concepts-Applications-Vol/dp/0070654743

Its serious but I learned so much. One thing that might help you is looking up functional harmony. Its basically the theory of what chords lead where. It changed everything for me because I learned to imply other chords on top of simple progressions while stilling moving with them.