How to save image after editing using photoshop?

Go to File > Save As (Ctrl + S), and choose your format from dropdown list, JPG/JPEG is most used, and click save , and ok. Or you can save in PSD format. PSD is photoshop format, that you can later edit LAYERS, and again save. But JPG/JPEG is final image, you can edit, but you can'y edit layers on that format.