Dave has the right idea. He is showing you there is info online explaining composition. In actuality in today's digital age everything is online for the taking. I am completely self taught from practice and reading online.
I am in no way an expert but I have been trying for about 10 years to get better at Photography.
I was not good when I started. And by not good I mean I was awful. It's just something you need to learn and practice. It's like learning to play guitar. No one picks it and plays. It takes effort and ambition and eventually you get better.
The tips in that article are very good. I rarely shoot people but those tips work.
I shot this one with a 200mm F2 VRII lens. Shot wide open at F2
See her face is in a different direction than her body? Also the depth of field is shallow and isolated the subject? The 50mm F1.8, 85 f1.8 will also accomplish this to a degree. More so their F1.4 counterparts but you can get the effect also with the F1.8 versions.
Sam directing traffic at the Cars and Coffee at Kerbeck by -mik3ymomo-