Whether you just closed a tab accidentally or have one in the back of your mind you need back, Command + Shift + T can get it back. Press it once to reopen your last closed tab, and keep pressing it ...

I just got my computer moved here at work and the guy that helped me move "warned" me that if I unplug my keyboard or mouse when it is running then I have a 1/100 chance of shorting, (frying) the ...