It's good to have a mechanic in the family, my dad, brother, and grandfather are all mechanics and I learned from them. There's a Bentley manual available on this site for download, I would suggest getting it, it's a great tool to have and there's more in that manual than a Haynes or Chilton will provide. I've learned a lot about my car from that manual. I'm really impressed with some of the BMW designs. Be warned that a car of that age will develop electrical issues, if it doesn't already have some. It's just a word of caution, I'm not trying to deter you from getting the car. Electrical is not an area I'm too up on, but working on my own car I have learned how to diagnose electrical problems and fix them with little to no money involved.