Photography using DSLR is a whole new world that you will love, but as a concept can be simple once you understand the basics.
Get familiar with: Shutter Speed (Exposure) , Aperture (F number), and ISO. Take your time to learn the meaning of each, and experiment to see how they affect the resulting image (amount of light, sharpness, and noise) and you will find your way from there.

Good luck and enjoy!