Theory Books

https://amzn.to/42MOICs
https://amzn.to/3piKoNH
https://amzn.to/3Ndwl4a
https://amzn.to/43JBjwv

Rhythm Worksheets

https://shedthemusic.com/rhythm-worksheets

Sight Reading

​https://imslp.org/wiki/Sight_Reading_Exercises,_Op.45_(Sartorio,_Arnoldo)

Sight Reading

​https://imslp.org/wiki/30_%C3%89tudes_de_m%C3%A9canisme%2C_Op.849_(Czerny%2C_Carl) 

Note Recognition Practice

https://www.richmanmusicschool.com/products/name-that-note
http://www.musictheory.net/exercises
http://www.musictechteacher.com/music_quizzes/music_quizzes.htm

THIS is a great app for note recognition: https://musictutorapp.com/​

Ear Training: Interval Recognition

https://tonedear.com/ear-training/intervals
https://www.sessiontown.com/en/music-games-apps/online-ear-training-ascending-intervals
​http://www.good-ear.com/ (also chords and cadences)

Ear Training: Melodic Dictation

http://sonicfit.com/index.php?page=MelodicDictation2015

Harmonization / Lead Sheets

https://pianosongdownload.com/leadsheets.html

Theory Websites:

Intermediate/Advanced tutorials:
http://www.teoria.com/

National Federation of Music Clubs Theory Tests/Answers
http://www.nfmc-music.org/index.php?src=gendocs&ref=Festivals

Apps to Practice on Phones/Tablets

Note Naming: 
https://midnightmusic.com.au/2019/04/5-note-naming-apps-that-students-love/

Sight-Reading:
​https://nolaschoolofmusic.com/blog/best-sight-reading-music-note-apps-for-iphone-ipad (for Apple)

Scales:
http://www.scaleblitzer.com/ (for Apple)

Sight-Reading and Practicing (short pieces):
https://itunes.apple.com/us/app/piano-maestro-by-joytunes/id604699751?mt=8 (for Apple)