This is really good for a person starting out with a DSLR. You have a great composition here. I recommend learning by experimentation and inquiring with others. A lot of photography concepts are covered well on YouTube. I learned a lot from Ken Rockwell though I know a lot of people don’t care for him. One thing to invest in is a good tripod. Take the same photo with multiple settings until you find what you want. Though knowing techniques is good and desirable, a lot of decisions are subjective to you as the photographer.