I am learning Photoshop and I am building a layered document for a promo. I imported a photo into the file that I realized included a border around the edge that I need to get rid of. I know it must be possible to get rid of it directly in my layered document in Photoshop (rather than going back to the original and working on it before bringing it in). I thought I should be able to select the border with the rectangular marquee tool + inverse and just delete, but when I inverse the selection includes all the way out to the background border, so I guess the tool is affecting the entire layer stack. From experience I know that cropping will do the same. I keep looking for a box on the tool menu bar not to sample all layers but it's not there. I did a bunch of searches online but can't find a direct answer to my question. Could someone help me understand if it's possible to crop a photo within a layer stack, and if so, how?