Moving up in the Galaxy

After much deliberation I have ordered an unlocked Samsung Galaxy S3 and hope to take delivery of it early next week.

I am presently looking at the apps I have loaded onto my 7" Galaxy Tab and determining those which I will load onto the S3 which will be running a much later version of Android than the 2.3 my tablet is running.

I also need to investigate a travel SIM card for Europe for when I journey there later in the year.

If any other S3 toting genies can offer me suggestions for getting the most out of my new toy I'd love to hear from you.