Delete the current line
d + d
Delete the current line + the line below
d + down
Delete the current line + the line above
d + up
To save the file and quit
ZZ (or) :wq!
To search
/something_to_search
To Delete characters
x
Next result
n
Previous result
N
One word to the right
w
One word to the left
b
Move the cursor to the end of the line
$
Move the cursor to the beginning of the line
0
Move one screen down
control + f
Move one screen up
control + b
Create a new line below the cursor and switch to insert mode
o
Move the cursor to the line G
nGMove the cursor to the last line
0G
Copy line / n lines
Y / nY
Paste
P
Undo
u
Redo
control + r