As for the vehicle, I know some old timers who are experienced that are gonna help me touch up the tad of rust (which def is not much!), and do some other things to make it look nicer. I also am waiting to buy an owners manual, but Christmas is here so it's time to buy gifts for others
Everyone hav Happy Holidays!
Couple of thoughts...
1) owner's manual is great, but not what you need to fix your problems
2) you need the service manual, often found on CDs, not sure if that exists for a car as old as yours, I have them for mine and they are priceless, as they take you through troubleshooting and repairs step by step. About $20 from what I remember
3) I hope whoever is helping you with the rust has experience. From personal experience, surface rust, unless fresh, is usually a sign of much worse hidden conditions. Once you start grinding away, you'll find it is really a lot worse than initially thought. Hopefully not your case, but still...
4) have you visited the W108 forum here on BenzWorld? I'd suggest perusing that and doing searches on things like "won't start", "fuel pump issues", "rust", etc. That forum is dedicated to just that series of cars, so you will find people with similar experiences and more knowledge that will be sure to help you out, providing you are nice and keep your attitude in check
You remind me a lot of my foster son. We had him and his daughter with us for a while. Both had the same upbringing/experiences. Yeah, the same old story of physical, emotional abuse, etc. Interesting to see how both tackled life. He was angry, defiant, thought he was entitled, etc. She realized that wouldn't get her anywhere and looked to the future, was nice to everyone, worked hard, and didn't take her anger out on others. My suggestion is you follow her lead, it will work out better in the long run, plus it will make your journey through life a whole lot easier on everyone, including yourself. Remember, we don't know you like you said, so we aren't out to 'get you' or treat you like crap as you unfortunately have experienced.