Editing images in raw mode allows you to optimize the quality of your photographs and prepare them before editing in Photoshop. Raw edit with produce a file that has been adjusted non-destructively with the option of changing it in the future. Consider Photoshop a tool to work on your photographs and Adobe Camera Raw as a tool to work on your digital negatives.
There are various image and raw converting programs available out there. our tutorial video explains the basics step by step how to Prepare your images in Adobe Camera Raw.