VIM editor useful shortcuts

Obviously, these little shortcuts will save your time.
Following shortcuts should be used in escape mode (After pressing  Esc).

Task	Key
Create a new line above current line	SHIFT + O
Create a new line below current line	O
Copy current line or selection	SHIFT + Y
copy a line	yy
Paste after cursor	p
Paste before cursor	SHIFT + P
Delete a line	dd
Start selecting lines (start Visual mode linewise) *Then use arrow keys to  -select other lines	SHIFT + V
Jump to end of the line	SHIFT + A or $
Jump to beginning of the line	SHIFT + I or 0 (zero) *have slightly difference
Undo (step by step)	by pressing U
Indent right	>
Indent left *You can indent single line or selection of lines too	<

*press "." to repeat any task. For example: press dd to delete a line and then press "." to continue deleting line by line.