Koby,
Don't spend any money yet! Research is free.
You have found, perhaps the best way to start, this site.
Next, get the free stuff, the vendors catalogs from,
Mikes,
Brattons,
Snyders,
Macs,
are the first that come to mind that have exploded views of the various assemblies.
Information, there are web sites that are real good, Marco's A Barnyard ,
Model A basics, and
Jim Masons site are just a few to start off with, as a matter of fact Jim's site has a section
Where to Start.
Do you have any tools? Remember that the Model A is english (SAE) not Metric. Get a good set of hand tools; wrenchs, sockets, and screw drivers. Good sets will last a lifetime, work easier, fit better with less swearing.
Books,
There are a ton of books out there, My recommendations to start are the Les Andrews Red book. This book has step by step instructions for the repair of the Model A. Not Perfect but the best out there in one place.Next the Restoration and Judging manual. When faced with a choice of several parts that will work, it's just as easy to pick the correct one for your specific car as it is to pick one that is not correct. Again this is just a start there are others to add later
DO YOUR HOMEWORK on the different styles. There are cars with alot of wood and cars with a little wood. Wood can be expensive and time consuming if it needs to ne replaced.
SAVE YOUR MONEY, DO YOUR HOMWORK, ASK QUESTIONS!!!
As a general rule (there are exceptions to rules) it is far better to spend more money on a car that drives, stops and runs through the gears, then a cheap car that you know nothing about.