插入模式

i   = insert mode at cursor
I   = insert at the beginning of line
a   = append after the cursor
A   = append at the end of the line
o   = open blank line below current line
O   = open blank line above current line
Esc = exit insert mode

光标移动

h,j,k,l = ←, ↓, ↑, →
ctrl+f  = 下一页(forward)
ctrl+b  = 上一页(backward)
[N]G    = 跳到第N行
`.  = 跳到最后编辑的地方
w   = 跳到下一个单词的开头
W   = 跳到下一个单词(空白分隔)的开头
e   = 跳到下一个单词的末尾
E   = 跳到下一个单词(空白分隔)的末尾
b   = 跳到前一个单词的开头
B   = 跳到前一个单词(空白分隔)的开头
0   = 跳到本行行头
$   = 跳到本行行尾
^   = 跳到本行第一个非空白字符
g_  = 跳到本行最后一个非空白字符
gg  = 跳到第一行
G   = 跳到最后一行
*   = 向下查找当前光标所在位置的字符串
#   = 向上查找当前光标所在位置的字符串

编辑

ctrl+r  = redo
u   = undo
~   = switch case
>>  = indent line one column right
<<  = indent line one column left
==  = auto-indent current line

剪切与粘贴

dd  = 删除当前行，并把删除的行存到剪贴板里
x   = 删除当前字符
X   = 删除前一个字符
dw  = delete to end of word
D   = delete to end of line
yy  = 复制当前行
[N]yy   = 复制N行
yw  = copy to end of word
y$  = copy to end of line
p   = 在光标位置之后粘贴
P   = 在光标位置之前粘贴

查找

/pattern = search for pattern
?pattern = search backwards for pattern
n   = repeat search in same direction
N   = repeat search in opposite direction

退出

:w  = 保存
:wq = 保存并退出
:x  = 保存并退出
:q  = 退出，有改动未保存时退出失败
:q! = 强制退出