this happens at home, haha, now let your stuff:
.- Exact things to go mobile to PC or vice versa is MTP mode (now to unplug, bottom left of your computer, you will get a USB icon (where you have several, battery, wifi, etc., click on the right and you will get an option to disconnect the device that is, in your case looking mobile), but you get the icon, you get a arrow pointing upwards, click there you will more icons.
.- The best way to know whether or not it is worth, is installing, go to the Samsung and bajatelo there, and install it, then we only have to connect the phone and it will automatically recognize it. Using it is easy and simple, is all in Castilian and very well explained.
A greeting.