It's highly recommended to read this article, otherwise you might get lost and confused.
Make sure you have the resource pack! Type in the chat /getrp auto
Basic commands :
/skills help - Note, skills are additional. Work on them hard and they will make your wizard stronger.
/home ? No such thing, wizards use spells.
To become a Wizard, you'll need to craft a wand.
Wands are made of:
1x Heart of magic <- ( 1 Diamond + 4 Emeralds. )