In Photoshop saving images is essential and varies depending on what you want to do. Learn all about saving images in Photoshop in this free lesson.
You'll use the Save As command to save files in the PSD format, as well as other common formats like JPEG and PNG.
If you've already saved your project as a PSD file, you can select FileSave or press Ctrl+S (Command+S on a Mac) to save your progress at any time. However, if you're working with another format such as JPEG, we recommend using Save As to avoid overwriting your original file.
Open the example file in Photoshop and then try saving in different file formats, such as PSD and JPEG. Notice how the PSD format preserves the individual layers, while the JPEG format does not.