I suggest that you become familiar with the search feature at the top of the page. You can find a huge
amount of information here in the forums about almost everything imaginable on AS restoration. Type in key words and see what you find.
For floor rplacement you could check out the following thread where I describe in detail what I did to replace my floor with a non-plywood alternative called Polyboard.
Keep asking the questions as they come up too. Someone will usually pipe up with an answer. You can also send a private message to any member if you want more details about what they are talking about. Just click on their name next to a posting with your left mouse button and select the "Send a private message to..." menu item.
Have fun with your restoration. Also I highly recommend that you take lots of pictures.