Ein, start prenatals now. If you take them three months before conception, specifically folic acid, it decreases the chances of neural tube defects. If you take them longer, even better. I'm drinking FertiliTea and taking FertileCM and FertilAid. That actually has the folic acid you need and can be taken instead go prenatals, and that's straight from my midwife. My midwife looked at the ingredients in these supplements and said they would help. And I would start tracking your cycle and the day you surge now.
As for the donor, it depends on which route you go. If it's through a sperm bank,the contracts should be signed already. If its a friend or a known donor, have a contract filled out and have them get an std check. It doesnt matter how good of a friend you are, get a contract to protect yourself. No one is going to know how they will feel until the baby is born. Our known donor is going to have an uncle role in our children's lives, but we are still doing a contract. He is donating to two other ladies too, and he will be coparenting with them, as they are single mothers and that is what they want. We have met the other ladies and are going to raise opall our kids like extended family.
Again payment is up to you. We aren't paying our donor a dime. Some people do to make it more of a business transaction. I read on one website that you should pay one dollar just so there was payment for the service.
Home insemination is relatively cheap. You will need OPK's, syringes(we use 10cc ones), containers for the semen(I work at an obgyn so I bring home sterile specimen cups), pressed is a good idea, and pillows to prop up on. A lot of people use the instead cups also to keep the sperm from leaking out, and we are going to try that this cycle. And try for that orgasm!!
Just remember, it can be a weird and uncomfortable process at first. Keep your eyes on the prize!!