copy & cut in Vim

Copy(yank) in vim yiw - yank the current word
yw - yank from the current cursor location to start of next word
yb - yank from current cursor location to the end of the previous word
yy - yank the whole line (along with the newline character)
4yy - yank 4 lines (along with the newline character)
y$ - yank from the current cursor location to the end of the line.

Cut in Vim
diw - delete (cut) current word
dw - delete (cut) from the current cursor location to the start of the next word
db - delete (cut) from the current cursor location to the end of the previous word
dd - delete (cut) the whole line (along with the newline character)
4dd - delete (cut) 4 lines (along with the newline character)
d$ - delete (cut) from current cursor location to the end of the line
d^ - delete (cut) from the current cursor location to the start of the line
di” - delete inside double quotation place your cursor inside ”  ”

Paste in Vim
p text after cursor P text before cursor