You'll be fine. Not much to learn from 2007 to 2010, you've already suffered most of the learning curve.

My pet peeve with 2007 & 2010 is Outlook thinking if you give it an email address and pw, it can configure it for you. I've setup at least a dozen, never yet did it work - always had to go to the manual configuration. Which is fine, I just think it's stupid to include this.