Word out what's wrong with it, write a list. Decide what needs to be done first to avoid taking things in and out all the time...
Depends on the condition of it, at this present time. You could go the whole lot and strip it, going over every part and getting it back to near mint, or go a little more simpler and only do the bits that need doing.
On the areas that need restoring........your question is Waaaaaaay to open.
You need time and money, let me just say that. And yes your question is very open.