FWIW,
1. I agree with pawngal. From this point forward until it is all settled, stay out of the dating scene. This avoids having to defend yourself against an adultery allegation;
2. I'd set up a separate bank account for whom she is not the beneficiary. When it comes to cash, and cash equivalents, human beings become animals;
3. Engineer1911 has great advice - find the meanest, "Junkyard Dog" attorney that you can afford. You may not need those skills, but once the divorce proceedings begin, you just can't imagine the tactics that the other person will use, especially if they are receiving advice from co-workers, other divorcees, relatives, etc. You'll be prepared to effectively defend yourself against almost all arguments;
4. I don't believe that your state is a "community property" state, which is one less huge potential headache;
5. From this day forward, keep all of the written records that you might be able to obtain, and keep a written log of everything that happens every day. This record will become very valuable once the court proceedings begin;
6. Always be civil towards her, no matter what happens. The last thing that you need is to have a restraining order filed against you;
7. If you have a mortgage and if both your names are on the mortgage, contact your mortgage company to determine what actions you must take, and what options are available to you. You may have both previously qualified for the mortgage, but may not be able to qualify now. Ask about a quit claim deed and novation;
8. And lastly, engage a Certified Public Accountant who has extensive divorce proceeding and divorce settlement experience. In 38 years of practice I have yet to meet an attorney who can meet this standard. I've worked through almost a dozen divorces with my clients. They ALL have had income tax implications. I've also seen too many final divorce settlements that skewered my clients, legally and financially!