Currently Being ModeratedMar 24, 2013 1:39 PM (in response to Hugopak)
On your new mac you can open up iTunes then go to prefences in iTunes from your tool bar "iTunes>Prefences" from there select the option for devices and check the option to prevent automatic syncing. At that point its safe to connect your iPad to your new Mac then backup and transfer your purchases to your new iTunes library. Here are the instructions on how to transfer purchases and back up your iPad.
Currently Being ModeratedMar 24, 2013 3:23 PM (in response to Hugopak)
to make itunes look a little like the older one, enable the side bar by going to view then select show side bar, the steps are the same in iTunes 11 to backup and transfer purchased items.