How to store wine?

[Bella33]

What is the best way to store wine? I just moved to a house that has built-in wine racks. Each bottle space is tilted from top to low (the lower part is in the back of the rack). Should the cork be in the lower part? If that is the case, I find it odd that the bottom of the bottle will face the front part of the rack. Any suggestions?
Thank you!