Ask HN: What are your best productivity tips (shortcuts/keybings/workflowithetc)?

I am going back inside in 5 minutes and will include mine. I am having a bit of trouble adjusting from Yosemite and the GUI is slowing me down. I still mean this thread to be general tips and tricks for being efficient, but I personally am lacking in displaying programs in workspaces and efficient traversal of opened Windows/Desktops/programs on OS X.

tips about:

* keyboard shortcuts (program/global) * general workflows. * helpful programs & resources * general productivity * general productivity on OS X/UNIX (or Windows)

Would be awesome.

Tags might be helpful for position/environment etc.

Example

[OS X El Capitan / Web Dev / JS]

Or whatever you feel comfortable disclosing. Just think it could be helpful for others to parse.

Cheers.

Cheers