If you've downloaded and installed Exchange Server 2010 (if you haven't, why not? 🙂 see my post below for information on how to get your hands on it), be sure you head on over to the Exchange 2010 forums. There, you can talk with other people like yourself who are trying out Exchange 2010. Talk about what you like (or don't like), offer help and ask for help if you need some. MVPs and Exchange product team members are also there to help you.