Hi, welcome to SoM!
Things you should know:
You cant use magic to:
Change your DNA, like eye color or skin tone.
Become a vampire, or a werewolf, or some other creature.
Fly or teleport
Control elements, like fire water, air and earth. You can only use these to enhance your spells.
Basic things you may need to know
Go to this link, if you need help with these things.
Hope you have a great time on SoM!