Hi Guys, I've just ordered my 1st Mac computer ever... a 15'' Haswell rMBP ! I've never used MAC OS in my whole life, but I've been a user of iOS on my iPad, iPhone and iPod. (Halo effect here) I've been a PC user for more than I'd like to count, so, 3 questions: 1 - Do I need to install an Antivirus and/or Firewall ? (On the PC side it's unthinkable to work without this 2 installed, these days) 2 - Some websites, videos, books, etc, you recommend to familiarize with OS X / learn about the main differences in the ways of doing things, between a Mac and a PC ? 3 - Any recommendations/advices about software everyone installs on their Macs ? (I plan to take it easy migrating to Mac, so, I'll keep using Windows for quite some time. I'm thinking about installing Bootcamp or Parallels or VMWare, or something else... not quite decided yet). Thanks in advance for your help, guys !