Go to photo on computer.
	Rotate
	Select
	Save or Save as.
	If Save it will ask 'Replace?'
	Up to you. You confirm
	Or select  Save As
	Give image new name
	When posting make sure you select the saved and rotated image.
	 
	You can do 'bulk' actions but that may require a Masterclass.
	 
	Do one
	Do it right
	Move on