After many years of being a Windows user, I decided to switch to Mac. Can anyone recommend some video tutorials (YouTube or others) that teach new Macbook users essentials as well as advanced use? (Shortcuts,deleting/installing apps,antivirus,defragmentation, flash, java, reinstalling OS...etc). I am looking for a tutorial that shows how user experience is different so I can transition smoothly. I searched YouTube for such tutorials, but only found videos that show how to install windows on Mac or how to move files from windows PC to a newly purchased Mac. Thank you!