Good that you've gotten into photo, it's lots of fun.
Tips:
Never use blitz, it totally ruins your photo, especially if there's enough light to use manual.
Learn how to use manual settings, the base of photography, how to combine ISO, Shutter and Aperture to make a good photo.
ISO, shutter and aperture
A good compositions relies on these three factors, and placement of your motive. See how your motive creates lines and movement in your photos, perspective, symmetry, asymmetry and balance. They all contribute to give a better composition.
Subject Placement