I think you are are doing very well. Getting to grips with computer programs and their peculiarities is far from second nature.
Even if you get sleek at doing it there is always something new to learn. The results always seem to justify the effort though
As an aside, I have been a Doctor now for 17 years (this month

) ( although I still get asked sometimes "Are you a junior doctor?"

) and marvel at how much things have changed since when I was training. I can imagine how perturbed some of my more mature colleagues must be as the computer has infiltrated every area of practice
Back on topic: Roxio is (IMHO) very good for audio work (if you ever need it for that) . As you've sussed out, it has not been able to compete as well in the area of video (IMO) with its contemporaries
Feel free to post your queries or use the PM method if you get stuck
All the best