I actually just started doing the finger exercise again (sorry for keeping so much of it in the video). I'm having difficulty with a part of Layla and my guitar instructor recommended I do them to get my left and right hand timing a bit better.

As for practice, basically I pick it up when I can. I work from home, so some days I can take 20 minutes here and 20 minutes there. I put time in most days, at least 20 minutes, but occasionally I'll miss a day or two if I'm extremely busy. It's rare when I get more than 30-40 minutes in a day. I basically just pick and choose what I practice. Some days I'll practice strumming, some days power chords, some days scales and lead. I try to do a little bit of each every time I practice though.

I'll tell you what though, having a live instructor and being able to see what I'm doing on these videos is a huge help. I would recommend that everyone of every skill level record themselves so they can review their technique. I'll bet there are things you'll notice that you don't notice when you play.