As NekoKyrie said, you already have these powers. If you want to increase your magic powers' strength, then study the basics. Also, you could find a mentor that could help you and teach you about the magic you are interested in.
Here are some of the basics:
Days of the Week and their meanings
Energy Flow & Control
Colors and their meanings
Spirit Guides (if you want)
I would learn shielding before anything else. It's safer to cast spells, because casting spells is dangerous. You can read some of the articles and write notes in a notebook. Writing helps your brain remember it. It's good to practice meditating, shielding, grounding, and centering.
Hope this helps.