Congratulations! Glad to see you join the club. I just did a google search for you and found a lot posts about the bound book. Many on this forum, so just do a little searching.
Simply, it is a record of your purchases, and sales. They are technically called
acquisitions and dispositions. You need to record a description of the firearm which includes the manufacturer or importer, the model, the serial number, the type of firearm, and the caliber. Next, the date of receipt, or disposition, the name/address or name/FFL of who you purchased it from. Or for a disposition, the same info on who you sold it to. In the case of disposition to a non-FFl licensee, in addition you will need to record the Date of Birth, Drivers license or other ID and Alien ID if applicable.
Sounds a little more ominous than it really is. If you are like me, the disposition part will never be filled out. You can sell C&R firearms however to "improve" your collection as it states in the rules.
Another good forum for C&R holders is:
http://milsurpshooter.net/
BTW, my first C&R several years ago was a French 49/56 semi-auto rifle. Loads of fun, but high priced 7.5X54 French ammo.
You will enjoy the TT-33. I saw in Southern Ohio Guns flyer that they had Some Polish TT-33's, When I checked the website, all they had were Romanian. I've got one of them, great shooter, I just wanted to pick up a Polish Model.
While I'm at it, send or fax a copy of your license to all the distributors so you are on record with them when you want to buy something. Have them put you on their mailing and e-mail lists.
On the website I mentioned is a link to C&R Distributors.
Welcome to the crowd, and you are probably going to have to buy another safe for all your C&R's
Bob