need more info on wines

[naca]

Hello,
I have apllied for a server's position in a fine dining restaurant. One of the prerequisites is to have an extensive wine knowledge. I'm somewhat familiar with wines but definitely need to learn more. I guess, my question is what are some of the basic key informations that I need to know? What are the most important wine regions of the world? What wines go well with certain foods?etc.
Thank you in advance,

Natasha