Keep a detailed, dated journal of everything that happens. Include the times that the incidents happen. Gather up as much financial information as you can (bank statements, tax returns, stock portfolios, deeds, pay stubs, etc.) and make copies. Do not keep any evidence at home where there is a risk of them being found. Financial sources may magically disappear after you/they leave and you will need evidence that they were there before. If you are going to need money and have access to joint finances, you may want to begin taking small, unnoticeable amounts and then socking the money away. If you charge groceries, every time you go, you may want to use the card to get cash back. Hide or remove your valuables and sentimental things to prevent them from being stolen or destroyed.
There's much to learn and you must educate yourself in order to protect yourself. We are survivors and no longer victims ! Unfortunately , the abuse continues past the exit in the form of “post separation abuse “.