<human>: Could you distill the essence of the text into 1-3 sentences?

My husband (38) and I (34) have been together for almost half of my life. I was barely 18 when we met. We have 3 kids together, and are working towards an amicable divorce. Today we went and applied for separate apartments, so we'll hopefully not be living in the same house soon, and we want to do the divorce paperwork on our own.

We've agreed to have joint custody of the kids, but he is getting a bigger apartment than I am (in the same complex). Until I can afford a larger place, the kids will be sleeping at his place, but we want to switch off whose home they stay in once we can. Should we put that in writing in the divorce papers? 

For now he will be paying my rent, as I have been a stay at home mom for most of the past 14 years, and haven't been able to find a job, but we can't find anywhere to figure out how much alimony I should get. I don't want to take all of his money, but if I can get beyond my rent payment, I'd like to be able to go to school to have better job prospects. Is there a calculator that can give me an estimate, or site with suggestions on how to figure out what I should get?
<bot>: I have no idea what to do now that we've decided to get divorced! We are communicating well, but I want to make sure neither of us gets the short end of the stick.