The only trustworthy person is yourself, and when you learn how to do things yourself you will be that mechanic as well.
I'd agree 100% with that.
A good set of tools will last you a lifetime and can be re-purposed to cut down costs almost infinitely. Knowing how to do a job yourself (and kicking only yourself) comes with responsibility and it helps build "character".
Most of the maintenance you'll ever do on your car will need
Set of 3/8" sockets and wrench (w/ 24 mm for the diff/tranny!)
Screwdrivers (e.g. changing bulbs, pry bar and removing bumpers)
A 5/8" spark plug socket
Tire repair kit & air compressor
Channel lock pliers (e.g. brakes)
Pair of sturdy scissors (e.g. wires, packages and cabin filters)
And that sets you up for life! The internet is a wealth of information and DIY guides (e.g. brakes, coolant, plugs) which will save you THOUSANDS of dollars over a very short period if you have the motivation and the tools.
However, a good mechanic is still necessary sometimes - timing belt, transmission or engine rebuild. For those times, it's better to cherry pick based upon skill set (e.g. tranny guys are good tranny guys and not the best for recharging an AC setup)
