vimium.random

one tab to another tab, press SHIFT+j or SHIFT+k
back and forward, press SHIFT+h and SHIFT+l
x close tab, SHIFT+x to restore.
SHIFT+T search all tabs.
gi  focus the first text input filed.

"?" gives me.
Vimium Help
Options Wiki ×
Navigating the page
j, <c-e>		Scroll down
k, <c-y>		Scroll up
gg		Scroll to the top of the page
G		Scroll to the bottom of the page
d		Scroll a half page down
u		Scroll a half page up
h		Scroll left
l		Scroll right
r		Reload the page
yy		Copy the current URL to the clipboard
p		Open the clipboard's URL in the current tab
P		Open the clipboard's URL in a new tab
i		Enter insert mode
v		Enter visual mode
gi		Focus the first text input on the page
f		Open a link in the current tab
F		Open a link in a new tab
gf		Select the next frame on the page
gF		Select the page's main/top frame
Using the vomnibar
o		Open URL, bookmark or history entry
O		Open URL, bookmark or history entry in a new tab
b		Open a bookmark
B		Open a bookmark in a new tab
T		Search through your open tabs
Using find
/		Enter find mode
n		Cycle forward to the next find match
N		Cycle backward to the previous find match
Navigating history
H		Go back in history
L		Go forward in history
Manipulating tabs
t		Create new tab
J, gT		Go one tab left
K, gt		Go one tab right
^		Go to previously-visited tab
g0		Go to the first tab
g$		Go to the last tab
yt		Duplicate current tab
<a-p>		Pin or unpin current tab
<a-m>		Mute or unmute current tab
x		Close current tab
X		Restore closed tab
Miscellaneous
?		Show help