Can You Learn Improvisation From A Book? YES and NO! YES..... you CAN learn some basic rules and concepts. From The Jazz Ranch: 4 step method for Beginners...using the Book: Jazz Piano, Methods and Songbook for Professional {Playing. Vol. 2 Chapter 21. Basic Improvisation.) Link to view book: https://kenthewitt.com/book/
Link to book Appendix with 140 pages of exercises and drills for developing skills for improvisation: https://kenthewitt.com/appendix/
Link to watch video showing inside of book: https://www.youtube.com/watch?v=zIewmZ3jThE
Link to Appendix video:
https://www.youtube.com/watch?v=iXwA3W8sc38