Probably a dumb question and probably has been asked a few times by now, but is there a desktop manager of some sort for this phone??
To my knowledge, there is no Samsung, Google, or Android phone manager like there was for Blackberry.
If you want to transfer or sync media to your device, give DoubleTwist a try. It's very similar to iTunes, but it was made for Android devices.
For transferring data like documents or other misc files, I like to access my phone SD card as a mass storage device manually in my computer. I do that because most of those files are important to me, and doing it manually gives me a warm and fuzzy feeling that they are exactly where I put them.
To transfer files from the phone to my computer, I just push them using the Bluetooth transfer (long press on file, share using Bluetooth). Simple and effective. Other stuff I've tried has been too complicated.