This video is a good starting point for understanding melody and chords:
If you’re using a smaller device which makes reading the tabs difficult, then go to scalenumbers.com/tabs on another device to see the tabs full screen.
This guide shows how to read Nashville style chord charts:
The sheets below show how the scale-theory is applied to other instruments.
These show how you can play the same chords on the guitar:
These show how to play the melody lines on guitar:
Some more theory sheets here
If you want to get in touch about anything then you can reach me at scalenumbers101@gmail.com