Ooh, thx. I'm a single mum of 2.never been able to afford a decent car. There is nothing worse than breaking down with 2 howling children in the car at night in the back end of nowhere, and feeling helpless. Or worst, when you use the last nappy and forgot to buy an AA membership....
The other advice is learn the power of t'interweb. There are a zillion petrol head forums, which most of us do not hang out on as we do err here?! Type the problem in the search bar with your car model and year.... Yes, you may need to read a few threads that are irrelevant, (petrol heads' concerns take the mn obsession with toilet brushes into a new realm) but sometimes the answer is much simpler than a dealer or mechanic will make out.
I carry a simple tool box in my box - spanners, flat and Philips screwdrivers, some cable ties, spare fuses, pliers, etc oil, distilled water, antifreeze, a tow rope/strap, and a set of jump leads. If I can't solve it, the person who stops out of kindness always seems relieved to find that somehow we can bodge it to safety.