What do A, P, S, M, SCN and ISO of SLR cameras mean? How to take good-looking photos using a DSLR?

The meaning of the letters on the SLR camera is as follows:

As for how to take good-looking photos, you need to practice more and learn from your own experience.

If you want to take a good-looking photo, you must first have a certain understanding of what you want to take, and what style of photo do you want to take? How to shoot to achieve the desired effect? This requires more practice, accumulation of experience, and sensitivity to light. In short, practice makes perfect.

For example, if we want to take a still life, we must first find a suitable angle. The photos will have different effects under different lights. Secondly, the shooting distance must be grasped. Too close will make the picture feel too compact. It is necessary to leave some blank areas appropriately. Take a few more photos for comparison. The more you take, the quality of the photos will naturally improve.