You can use the Quick Selection tool in Photoshop to easily select and edit specific parts of a photo. Once you've made your selection, you can delete or edit that section without affecting the rest ...
You can use the Magic Wand tool in Photoshop to automatically select a specific section of the image. The Magic Wand uses colors to decide what should be selected, and you can change its "Tolerance" ...
Photoshop has a lot of tips and tricks that will make using it even easier. Go through this list and see which ones you already knew, and which ones are new to you. This list is in no way all the tips ...