Elements of Music
Music notation not required
https://wordpress.com/post/functionalanalysis.blog/1006
The rest of the posts help with reading musical notation, and concepts linked to that.
If when reading one of the following posts, you find a term or concept you’re not familiar with, cross-check the other posts in this category. If you still can’t find what you’re looking for, please ask and I’ll be happy to include an explanation!
Here’s a link for making staff paper if you need it: https://www.blanksheetmusic.net/
Basic Rhythm reading
https://functionalanalysis.blog/2017/07/02/basic-rhythm-reading/
Rhythm reading worksheets
https://functionalanalysis.blog/2017/10/24/rhythm-reading-worksheets/
Simple Meter
https://functionalanalysis.blog/2017/10/24/simple-meter/
Compound Meter
https://functionalanalysis.blog/2017/11/25/compound-meter/
Tuplets
https://functionalanalysis.blog/2017/11/25/tuplets/
Bass Clef 
https://functionalanalysis.blog/2017/06/13/bass-clef/
Treble Clef 
https://functionalanalysis.blog/2017/07/13/treble-clef/
Solfège
https://functionalanalysis.blog/2017/06/13/solfege/
Intervals 1 & 2
https://functionalanalysis.blog/2017/06/13/intervals-1/
https://functionalanalysis.blog/2017/06/21/intervals-2/
Consonance and Dissonance
https://functionalanalysis.blog/2017/09/21/consonance-and-dissonance/
Note reading worksheets
https://functionalanalysis.blog/2017/09/19/note-reading-worksheets/
Tonality
https://functionalanalysis.blog/2017/09/26/tonality/
Major Keys
https://functionalanalysis.blog/2017/11/20/major-keys/
Minor Keys
https://functionalanalysis.blog/2017/11/20/minor-keys/
The Circle of Fifths
https://functionalanalysis.blog/2017/11/22/circle-of-fifths/
Chords
https://functionalanalysis.blog/2017/12/04/chords/