Just to add to what FrankJBN said, there is no real need to copyright your work unless you're sending it to a dodgy publisher - vanity publishing for example. Make sure you research what publishers to send it to, reputable publishers who publish similar books. That's crucial.
Remember also that many publishers don't like it if you submit to more than one at a time. You can of course still do this, just don't mention it in your covering letter. <img src="/images/graemlins/crazy.gif" alt="" /> They won't find out since it's sooooo unlikely that more than one would take it up, no matter how sparklingly brilliant we all think our work is.
As for the deal, publishers rarely
buy your book so you should expect the royalties option to be the one offered. If it isn't, or even if it is, you can maybe get someone like The American Society of Authors and Writers -
http://amsaw.org/ - to look over the contract.
Don't forget me when you get your first royalty cheque. <img src="/images/graemlins/smirk.gif" alt="" />