Not really its very easy to google
By pointing the camera at a white or gray card (angled so that it is reflecting light as a neutral reference, filling the screen completely with it, then pressing the White Balance button (or set it in the menu), the camera does its WB calculation.
From then on, any picture taken will have its colour temperature shifted appropriately. It's quite simple, really, and you should not be afraid to try it out and see your pictures improve considerably (assuming there is enough light for correct exposure).
[A "neutral" gray is 18% gray and will reflect all colors equally.]