^This is me. I used to have an old guy who was the former mechanic where I worked who would do the work on the side for 10 or so bucks an hour. I always paid him more but he did good work so long as you were not in a hurry. For 10 or 20 bucks an hour I wont do it my self but now that he is not doing side work anymore and I am way too cheap to pay someone to do what I can do. I do understand more and more that my time has value but being a person who works in the digital world all day the analog stuff can be therapeutic which is why I also volunteer to wrench on warbirds on the weekends.
I have most of the tools and Youtube is super helpful. I am pretty mechanically inclined so probably don't need YT all that much but it often prevents the gotchas and you can pick up some great tips and shortcuts. I watch a lot of car repair stuff even if it isn't something I am doing just to learn some of the tricks.
I have 2002 Silverado with 215K on it and in the last couple years. I have done intake manifold gasket and knock sensors while I was in there, valve stem seals on one side , patched rusty fuel lines, brakes, rotors and a few calipers too, two front wheel bearings, several rusted brake lines, power steering line, power steering cooler, alternator, window regulator, tie rod ends and air conditioner tensioner pulley. I think that is just about everything sounds like a lot but still way less than a truck payment so long as this rusted hulk keeps passing inspection and when I drive it through the woods during hunting season I just don't care.
Also have a 2008 Jeep Cherokee 112K. It is a long story but I bought this car for a dollar from a friends company. It had a number of issues when I got it. I have done the rear brakes and e-brakes, speed sensor, starter, drive shaft (because Jeep in their infinite wisdom welds the U-joints in the original
). Rear wiper needed to be replaced and a TON of cleaning like hours and hours and hours. It looks really good now. It also had a tire that had an aneurysm and blew so after considering the tread that was left and being full time all wheel I opted for new tires. I still need to repair the cruise control and needs the front fenders repaired or replaced. With all that still way ahead of the game on this car and like the Silverado I plan on running it until it won't run anymore.
As for parts it depends on who has the best price. You can almost always get a 25% off from Advanced auto I check Auto Zone and Napa but they rarely compete. Rock Auto is decent. Amazon usually is competitive and Prime shipping helps. I also use Summit Racing quite a bit their prices are decent and their shipping is amazing. Over $99 is free and for me it is almost always next day.