@RaeYcrep Well, I only shoot astrophotography, so I'm fully manual, but here's 2 rules of thumb to get you off Auto mode:
If you want to control DoF - Set it to A (aperture priority). To get a nice bokeh, you'll want a shallow DoF (f1.8-ish).
If you want to control blur - Set it to S (shutter priority). Fast moving subjects such as pets, sport, etc will need something like 1/500. Waterfalls will need a tripod and a slow speed: 1/10 maybe.
What kind of subjects do you usually shoot?