Originally Posted by: ibguitarbetterAre there a set of backing tracks available that are in the Van Halen style that would allow me to practice soloing using the techniques I'm learning in the lessons?[/quote]

Yes, Dave's tutorial has jam tracks (backing tracks with the guitar removed). See here:

https://www.guitartricks.com/lesson.php?input=24692&s_id=2034

Originally Posted by: ibguitarbetterAre there any other courses I should check out?[/quote]

I have a tutorial on 70s arena rock type material that might help.

https://www.guitartricks.com/lesson.php?input=16849&s_id=1251

And this tutorial on using the vibrato bar.

https://www.guitartricks.com/lesson.php?input=16544&s_id=1219

[quote=ibguitarbetter]I really like the type of tapped harmonics used as fills on Poundcake by Van Halen

Dave does some harmonic tapping in this section of the tutorial.

https://www.guitartricks.com/lesson.php?input=24690&s_id=2034

[quote=ibguitarbetter]is that a song that may be added, or is there another song available using similar techniques?

You should add that to the song request document. But to my knowledge VH or their publisher has not approved any of their songs for legally official lessons.