https://www.udemy.com/10-top-yosemite-tips-and-tricks
1. Screenshots
Cmd+Shift+3 - Take Screenshot
Cmd+Shift+4 - Take Screenshot of selected portion
Cmd+Shift+4 then Space - Take Screenshot of application
2. Hot Corners - Mission Control
3. Batch Renaming
4. LaunchPad
5. Airdrop
Cmd + Shift + R
6. Trackpad Gestures
7. Mail Markup
8. Full Web Address - Safari
9. Screensaver Password
10. Best Anti-virus - AVG
