I am totally new to macs and osx so I'm still trying to figure out how the folders are organized and the difference between things on docs, applications, and my finder. I downloaded chrome and an google disk icon appeared on my desktop. What should I do with it? Leave it there? Move it into the download folder or move it elsewhere? Also, in my download folder another file called googlechrome.dmg appeared. What should I do with that file? What should I do with files in the download folder in general?