My first galaxy phone. My previous one is an iPhone 4s and I have some questions. -I used to download mp4 videos from Youtube and put them on my iPhone. How do I go about doing this to my S5? -What's the best program to transfer files from the PC to the 5S? Like pictures, videos, etc.. -I got the 5S connected to the PC right now and it's charging at a pace MUCH slower than my iPhone 4s, is this normal?