Thanks for the input Dudley.

Being a novice mechanic, I think that I can do the cleaning and derailleur adjustments. I have changed brake pads and that stuff too. As far as the wheel bearings and bottom bracket stuff, I am afraid I will open up parts on the bike and then have no clue about what to do next. I will be without wheels and then have to DRIVE to my LBS with my head hung in shame lugging my bike and its guts to their counter where they will look down their noses and guffaw at my inadequacies as a bike mechanic.

So, I might just stick to the professionals doing the work.