After you've bought your chain lock or U-lock, let's find somewhere to park your bike!
Bike parking in front of Ebinger (moderate-low risk)
Bike parking in the rear of Ebinger (low risk)
The fence of the alley or rear, NOT the field or playground (high risk)
The fence near the field or playground or a tree (not advised)
 Lock your bike correctly!!!
Use the U-Lock or chain to lock the rear wheel and seat tube together. DO NOT lock your bike on the top tube, handlebar, or just the wheel.
Use common sense!
Update: After seeing someone's bike wheels and seat get stolen, the "overkill" thing should be disregarded. It's the best way to lock your bike.