Dan, and Mach V I am sure would be happy to help, but, for just an oil change, if you really don't have the time/space/know how, it is really something a Jiffy Lube place can do. It's something a trained monkey can do, it isn't technical. . .oil goes out, oil goes back in, don't over tighten the oil pan drain plug, don't under fill/over fill the oil.
the brakes, while not a difficult job, I would trust a man, more than monkey to do. there are no shortages of places in Manassas too, google/yelp, and read the reviews.