Online resources
–Learnsaxophoneonline (You can sign up for a free account!)
–Edsaxschool (this is youtuber Dr Selfridge’s website, which offers free handouts, practice exercises and saxophone lessons).
This gives you a free 6 part course on how to learn to play the Saxophone by ear, using the first five notes.
I absolutely love this website as it not only has free sheet music from beginner to advances levels, it also has free playalong jam tracks which you can have fun improvising to.
This is a really great beginner band program created by the Center for Music Learning at the University of Texas at Austin, which focuses on learning by ear at the start, and includes video examples for each instrument, a teachers book, pieces for each instrument, and plus, it’s all free!!
E.g of one of the beginner pieces from the program.

Books I’ve been using and recommend (for both students and teachers)
–Essential Elements for Band (Eb Alto Saxophone Book 1)
–A Dozen a day Saxophone (really fun pre-practice technical exercises with cool backing tracks!)
–Tune A day for Alto Saxophone (book 1)