Here are Exchange Server 2010 videos for you to get started with. Watch the video after the jump:
Exchange Online Screencast Part 1 – Account Logon and Domain Setup
Exchange Online Screencast Part 2 – Adding and Testing Users
How Do I: Size Exchange 2010
How Do I: Use Exchange 2010 Performance Counters?
How Do I: Build Exchange 2010 CAS Arrays?
How Do I: Configure Mailbox Plan Attribute Flow?
How Do I: Create and configure certificates with Exchange 2010?