shortcuts

For Firefox (get off of the slow and virus-prone Internet Explorer):
Ctrl-K - Takes you directly to the search box at the upper right, where you can search Google, Amazon, and more with one click (Enter)
Ctrl-L or F6 (latter PC) – Takes you to the URL field to type in a new web address (Hint: just type in the name of a company or person — no “www” or “.com” — and hit enter to find their website, if it exists)
Ctrl-T – Opens a new tab
Ctrl-D – Bookmarks the page
Ctrl-+ – Increases font size on any webpage
Ctrl-[-]- Decreases font size
Ctrl-0 [zero] – Returns font to original size

For Gmail:
First, go to “settings” to the upper-right of your inbox and turn on keyboard shortcuts. There are a lot of them, but there are my faves:
c - compose a new message
tab + return/enter – send message
u – return to inbox (or previous conversation list)
r – reply
a – reply all
f – forward
e – archive
and my favorite of all:
# – delete message