Over the Edge
Wizards are supreme magic-users, defined and united as a class by the spells they cast. Drawing on the subtle weave of magic that permeates the cosmos, Wizards cast spells of explosive fire, arcing lightning, subtle deception, and brute-force mind control. Their mightiest spells change one substance into another, call meteors down from the sky, or even open portals to other worlds.
The base Wizard is found in the 5E Players Handbook, a pdf of the PHB can be hound here.
Customization for the Wizard consists of choices for Arcane Tradition (all Wizard choices are shown below):