Here is a suggested ‘path’ for learning from these two courses:
You need a subscription and to be logged in to view the videos. The first four lessons of the Music Theory Course were expanded into 16 lessons in the Reading Music Course. So start with the Reading Music lessons first. You do not necessarily have to master every song before diving into the Music Theory, but you should have a good grasp of the basic of reading music before looking at the Music Theory lessons.
I suggest doing at least the first 10 Reading Music lessons before looking a the Music Theory.
Lesson 5 – The last video, ‘Four Basic Chords’, is new. The rest are already covered in lessons from Reading Music.