You can either open it from Windows – Layers. Layers: While working in Photoshop, layers is one of the most needed tools.Placing image: You can either directly drag and drop the image or import the image by going to file – import – images from the device.You can toggle between the full-screen view and normal view, simply by pressing the ‘F’ key on your keyboard. The Document Window: The large area in the middle of the interface where your file is open is known as the document window.You can change the interface as and when you like from the Windows – workspace option. Usually, the interface is kept to Essential (Default). You can select the tools and bars that you want to see. Interface: You can set the interface according to you.The background could be according to your preference. And if it is to be printed then you should select CMYK. If the document is to be used on the web you should choose RGB. The color mode is chosen between RGB and CMYK.
The resolution also depends upon the type of work you are doing, Generally, for the best resolution, it is kept at 300 dpi. The Photoshop file is usually kept at a pixel scale, however, it may depend on you what you want. You can also choose to see the dimension on a different measuring scale-like pixel, inches, centimeter, point, etc. You can also name your file at the preset details.