There is not much my father didn't show me about cars. I learned how to change my own oil, brakes, fluids, etc. My brother and I learned how to upkeep a car and keep in working condition.
Certain things, however, should be left to the pros.
My dad trusted Venero motors for all of his muffler and engine block problems for as long as I can remember. We brought my first car in, thinking we would need a complete exhaust overhaul, but just needed a new manifold, which they promptly installed for parts + $25. I had my car back in 3 hours. They are friendly, efficient, and answered all of our questions.