JPEGs are a type of image file that are often used for photos and images on the web. They can be opened in Photoshop by going to File > Open and then selecting the JPEG file that you want to open.
Once you have selected the file, it will appear in the Photoshop workspace. You can then edit it like any other image file in Photoshop. This includes cropping, resizing, adding text, and more.
To save your edited JPEG, go to File > Save As and select JPEG from the drop-down menu. You can then choose where to save the file and give it a name. Once you click Save, your JPEG will be saved with your changes.