All Musicians

Free Music Theory Website:

https://musictheory.pugetsound.edu/mt21c/BasicConcepts.html

Rhythm/Counting Exercise Book: https://www.amazon.com/dp/1705103286?ref=ppx_yo2ov_dt_b_fed_asin_title

Complete Book of Scales/Chords/Arpeggios/&Cadences:

https://www.amazon.com/dp/0739003682?ref=ppx_yo2ov_dt_b_fed_asin_title

Easy Hanon:

https://www.amazon.com/dp/1480330140?ref=ppx_yo2ov_dt_b_fed_asin_title

Essential Dictionary of Music Notation:

https://www.amazon.com/dp/0882847309?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_17

Circle of Fifths:

https://www.amazon.com/dp/178933019X?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_48

(Jazz) The Real Book: Key of C

https://www.amazon.com/dp/0634060384?ref=ppx_yo2ov_dt_b_fed_asin_title