Ctrl t New tab
Ctrl w Close tab
Ctrl shift t Undo close tab
Ctrl tab Cycle between tabs (hold the Ctrl key down and tap tab)
Ctrl h Open History
Ctrl j Open Downloads
Ctrl r Reload page
Alt d Select current URL
Ctrl shift d Bookmark all current tabs (adds them to a new folder for later retrieval)
Ctrl shift o Opens Bookmarks Manager (retrieves saved folders as above)
Alt f, l e Open Extensions (search for extension, tab until on the toggle then enter to quickly switch on/off)
Ctrl g Move to next searched item (useful after searching page and moving to next occurrence)