Hi
solveg,
I'm in the process of restoring my first bike too. Upon completion I have 3 more to go in my collection so far. I'm doing one at a time. My problem is that I'm bit of a purist, I would prefer to use what originally came with the bike but that can be both difficult to find and rather costly. I have more time than money. So I settle with what I've got or can afford. I found the following links to be very helpful:
http://howtofixbikes.blogspot.com/
http://www.bunchobikes.com/detailing.htm
However my real teacher was finding two bikes in the trash, each had missing parts but I wasn't really interested in that. These bikes are/were dept. store bikes and really abused so I didn't want to fix them up and use/sell/or give them away. I just didn't care what happened to them. So I read up on the subject of Head Sets, Bottom Brackets etc... I removed these and took notice and digital pictures so I got some hands on experience. I ended up keeping some parts but basically stripped them down to look like a turkey after the Thanksgiving dinner. So I got a feel for when I tackled my prized possessions. I have already restored/detailed the head set and brakes, next is the BB of the 1st bike. I broke it down into sizable jobs and so far so good. Referring to those two sites really helped me a lot.
Best of luck from Las Vegas, you know that place where the sun always shines and the people are always shady.