Note: Some of these shortcuts have been remapped for my own convenience (Preferences->Keymap). These are Mac shortcuts, just use the Windows/Linux equivalent of the Cmd/Option/Ctrl/Del keys.
####Search, Go to, Navigation ####
Cmd + P - Search file
Cmd + Shift + O - Search everywhere
(I swapped the above two recently because I use Cmd + P to search for files most of the time).