Best thing you can do is have a look at the How-to Forum here
http://www.the75andztclub.co.uk/foru...splay.php?f=28
My technical prowess pretty well ends with pointing people towards the how-to forum I'm afraid.
You'll find answers to just about everything more quickly if you make it your first port of call when you have a problem. You can also do a search from the top of any page, "water in footwell" for instance. If you're still stuck, or need clarification, by all means shout up.
The cars are generally very good once you've sorted any of the known issues. Don't give up on it too soon.