Crop tool on photoshop step by step
Step 1: Select the crop tool, which is the fifth one down on the left hand side image. There are grabbable corners on the image you want to crop.
Step 2: If you want, you can constrain your crop by clicking on the drop down menu in the options bar. You can create your own crop by doing this.
Step 3: Hit the tick button to apply. If you turn off delete cropped pixel in the options bar, photoshop keeps the trimmed areas as part of the document in case you want to bring them back in later.