I'll try to give you a bit of help on "Never Too Much"
The most prominent notes in the intro are G, A, B, and D. They tend to be your target notes throughout the intro.
The song starts out with a slide down the neck from the D at the 19th fret of the G string. Then pick up the bass line with the A on the E string. Then you walk up G - A -Bb - B. This is a good place to pop A - B on the G string. Then the next little figure is B-B A - B - Db - D A - G. You can pop the G on the D string. The verses tend to focus on just rocking back and forth with B, D, and G as target notes. As long as you keep the pocket, you can play around with it a lot.
The chorus is heavy on E. The way I do it is I pluck A on the G string, hammer on B. then thump an open E. Do that 3 times. Careful muting that open E. Then thump the E a few times (when you here the song, you'll know the rhythm for that), then walk E - Gb - G G-G G-A. Then Gb - B - E and repeat that whole little figure a couple times.
That should set it up for you to be able to figure out the rest of it and to add your own flavor to it.
Peace,
James