Adding smart guides in Photoshop is a great way to add extra information to your photos. Smart guides are lines that connect different parts of a photo and can be used to help you create more accurate compositions. To add a smart guide, first open the photo in Photoshop and select the layer that contains the photo’s content. Then, click on the plus sign (+) next to the layer’s name and select a smart guide from the list that appears. Once you’ve added a smart guide, you can use it in any photo by selecting it and then clicking on its thumbnail to see its details. You can also use the keyboard shortcut Command+Option+S (PC: Control+Option+S) to save or load your smart guides into your photo permanently.