You said, "Interesting he is playing 7 5 3 but I guess as long as it sounds good it's all fair game."

Yes, the sound is primary.  But the reason it sounds good is because they are notes from the D minor scale AND they are the chord tones from that chord that is happening right then.

You might want to start with the Bread and Butter licks first.  That way you will start getting some licks under you fingers.  You will have something to do that sounds musical and something to play when you start improvising.

The improvisation collection has a lot of conceptual content, explaining the hows & whys of the theory.  There are a ton of practical examples so you can apply the theory.  But it's concept heavy.  So, learning the licks will get you focused on playing music.  

I don't know of any way to organize or mark forum threads as favorites in the GT system.  I usually save the URL as a bookmark in my browser.  Hope that helps!