Thursday November 15, I sent in a good sized box of paperwork (US medium flat rate mailer box) to the USCIS. Tracking number shows they received it Nov. 17...then we didn't hear anything for awhile...until Sunday Nov. 25, 2012! Woohoo! When you send in all the paperwork, there's a form you can include that allows them to reach you by email, text, or both, rather than just by mailing you a hard copy. We sent that for in, and last night we got both a text and email saying that they got the paperwork, assigned us a case number, and let us know what service center (California or Vermont) was going to process the paperwork. :D Talk about a happy moment!
Now, we have to wait for awhile, and if we don't receive any RFEs (Request for Evidence), we should get another text, email, and hard copy stating that they want my financial info. Whee! The ball is finally rolling!