Hi
To even consider egg donation shows that you have your heart in the right place. It is an incredible gift to give.
As Sal has said, there is a lot of counselling involved, clinics like you to have completed your family and preferably be under 35.
I am a member of an egg donor's group. There are lots of ladies in there like you who are there to learn and listen about the experiences of others. I'd suggest you join there and get a feel for the 'territory'. Because of the sensitive nature of the topic, you have to register and explain why you want to join. But, it's no big deal. Just say what you have posted here. They really are a lovely group of very knowledgeable and understanding women. I will PM the site to you.
The only comment I'd make is that you really need to be sure you are being a donor - not a lender. I had an experience with someone who was toying with the idea of being a donor but made a few too many comments about how I would drive if I had a child, what time they'd be fed etc etc. It seemed that she was only 'loaning' her eggs and wanted to play a bigger part in any child's life than I was prepared for. I think it's great for the donor to have a role in the child's life, just not the right to tell the recipient parents what to do.
Good luck with your journey, I think you're great.
Sue