Talk to an attorney. Don't agree to a single thing until you've spoken to an attorney. If the attorney doesn't listen to *all* your information or doesn't look at your financial spreadsheet (bring a spreadsheet with incomes, expenses, assets and debts), get another attorney.
Google state-specific laws for your state, that can start you off with some idea of what to expect.
But talk to an attorney. Don't put it off, and don't agree to anything until you've done it. I can not stress this enough, as I have seen guy after guy after guy get hosed in their divorces because they wanted to be fair and nice and generous, but did not realize the consequences down the road of what they were agreeing to.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17