In photography basics, you should understand the exposure triangle which is made up of aperture, shutter speed, and ISO. These three elements work together to control the amount of light that enters the camera and affects the final image. Additionally, you should follow the rule of thirds for composing a photo, use autofocus or manual focus to achieve sharp focus, pay attention to lighting, adjust white balance to make sure that the colors in the image look natural, do some post-processing on the image and practice as much as possible.