Firstly, congratulations!!
I would say don't stress yourself trying to be "perfect!"
You can get some really goos pregnancy journals, to write EVERYTHING in. Or you could make your own. This would make a lovely record to look back on, and keep to show your child.
If you are in the UK, you get to take your maternity notes home with you during the pregnancy, but they do take them back after you've had the baby, so take note of the things you'd like to remember (such as birth plans, dates of appts etc)!
http://www.darlinganddarling.com/pregnancy_jou rnals.asp
As for discussing things with other mums-to be, attend your ant-natal classes as they are a really good way of meeting people at about the same stage as you are.
Good luck
ERx