Landyke's guide to learning auto mechanics as a womon on your own:
1. Buy a total beater (of a common make and model so you can find parts) that you can test drive that has a decent engine/ transmission. Ideally it is a truck/ SUV type. Sedan is not ideal but ok. Minivans are bad. Get triple AAA and try to only drive it locally for a while. Get an older car without all that plastic junk covering everything important up.
2. Buy a socket set, oil drain pan, and Chilton manual for your new chariot. Rhino ramps if you got a sedan or vehicle you can't get yourself underneath easily. With ramps you won't have to jack it up every time you want to change oil or look at something.
3. Change the oil, air filter, transmission fluid and coolant. There are many YouTube videos you can look up. Might want to flush brake fluid too, if you're in a humid climate and they're spongey.
4. Look up the maintenance schedule for your vehicle, do at least the engine/transmission maintenance.
5. Something will break! Read your Bible (Chilton). Replace it. Look up how mechanics diagnose problems you have. Decide if you want to buy the tools for the job, or if you'd rather loan them from the auto parts store. You probably don't need to own a fuel pressure test gauge kit for example.
6. When you change your brakes, don't take your noble steed onto the road until you're SURE you did it right (particularly on drum brakes.... trust me...)
7. Keep doing this until your vehicle completely shits the bed.
8. Get a new vehicle that is hopefully less of a beater and repeat.
Remember that cars are designed to be worked on by lazy, ignorant men with, on average, a HS diploma and *maybe* some formal training. Most things are not super complicated. Most of the time you'll spend fixing things will be prying 20+ year old parts off.. seriously it's like they get superglued.