Last week I order a 17” (refurbished from Apple with Apple Care) iMac for my family. We are all switching from a PC. I am hoping that the transition will be somewhat painless as my whole family will be looking to me for the answers as they work with the new system. The problem is I am pretty clueless when it comes to Macs and OS X. Can some of you give me some important / general configuration tips or lead me to some good articles that will save me from newbie type mistakes?