Here are a few suggestions for books that I recommend for my middle/high school students.
The standard for natural cane reeds for saxophone.
D'Addario Reed Case
This is a great stand-alone reed case that not only protects up to 8 reeds from damage but provides consistent performance.
It is vitally important to store reeds properly with a consistent humidity. These Pelican cases are a great and inexpensive solution.
This Rico strap is comfortable and with the snap hook provides extra security for the saxophone.
Selmer S80 and Vandoren AL3 Optimum.
High grit sandpaper is great for an easy and cheap tool but the Vandoren reed resurfacer will last a lifetime.
Vandoren Optimum and Rovner Versa are great options. Much better way of securing the reed to the mouthpiece as well as improved tone and consistency.
Reed care, basics of embouchure formation and voicing. Exercises include: Long tones, Articulation, Technique.
Here are a couple advanced books for etudes.