Tips Buying an S2 tomorrow!!! suggestions?

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http://androidforums.com – Going to buy an s2 tomorrow. I've been browsing the forums for quite some time to get a good feel on terminology for android phones. I am finally making the switch to a smartphone. I am fairly tech savvy, so I think I can root the phone successfully. What are the things I should do first once I get my phone? Thanks in advance! (General)