Here's a list of keyboard shortcuts for the Windows or Web app:

Dashboard: ⌥ + A \ Alt + A
Styleguide: ⌥ + S \ Alt + S

Jump to Next Screen: →
Jump to Previous Screen: ←
Jump to Screen: ⌥ + J \ Alt + J

Zoom In: ⌥ + + \ Alt + +
Zoom Out: ⌥ + -  \ Alt + -
Actual Size: ⌥ + 0 \ Alt + 0

Pan screen: Space
Manage tags: ⌥ + T \ Alt + T
Search screen: ⌘ + F \ Ctrl + F

Clip screen thumbnails: ⌃ + ⌥ + T \ Ctrl + Alt + T

Show/hide screen grid: ⌥ + G \ Alt + G

Close any popping thing: Esc
Navigate between list items: ↑ and ↓

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