How should beginners combine aperture and shutter speed in photography?

It depends on the actual brightness of the subject. The camera itself has a measuring cursor. You can fix an aperture value first, and then calculate the required shutter time according to this aperture value.

Usually beginners don't consider the shooting effect first, but start with clarity and composition. We have to figure out the situation first, right? The average aperture value is 5.6 or 8. Select AV mode, so that the camera can choose the appropriate shutter time. Pat it and find the feeling. Don't worry.