Place a cup, book, plant, or any small object near a window and look at it before picking up the camera. One side will usually feel brighter, one side will fall into shadow, and the edge between them may be soft instead of harsh. That quiet change from highlight to shadow is one of the easiest ways to begin understanding light, because the scene is still and you can move around it without pressure.
Window light is useful because it shows direction clearly. If the window is on the left, the highlight often sits on the left side of the subject while the opposite side becomes darker. If the window is behind the subject, the outline may glow while the front loses detail. If the subject faces the window, the light can become flatter and more even. None of these choices is automatically right or wrong. Each one changes the mood, depth, and visual weight of the photograph.
A helpful exercise is to keep the subject in the same place and move only your camera position. Take one photo facing the window, one from the side, and one with the window behind the subject. Then compare the shadow shape, background brightness, and texture in each frame. Do not add filters yet. The point is to see how much the photograph changes before editing, simply because the camera and light are working from different directions.
The difficult part for many new photographers is noticing highlights before they become too bright. A white wall, shiny table, forehead, glass surface, or pale object can lose detail quickly near a window. On a phone screen, tap the subject and check whether the brightest area still has texture. With a digital camera, review the image after shooting and look for areas that appear flat white. If the highlight is too strong, move the subject farther from the window, turn it slightly, or wait for a cloud to soften the light.
Shadows need attention too. A shadow can add depth, but it can also hide the part of the subject you care about most. If the dark side feels too heavy, try placing the subject closer to a light-colored wall, notebook, or plain surface that reflects a little brightness back into the scene. This does not require special equipment. Even a sheet of white paper can show how reflected light opens the shadow while still keeping the photo natural.
After taking several versions, choose the image where the light explains the subject best. Maybe side light reveals texture on a leaf. Maybe front light suits a simple portrait frame. Maybe backlight makes a glass object more interesting. Write one short note about what the window did: softened the shadow, created contrast, showed texture, or made the background too bright. That note matters because it turns guessing into observation, and observation is the habit that makes later photo choices easier.