Many believe locks = safety. Learn how they work, how they’re picked, and why security is more about deterrence.
NOTE: PLEASE PAY CAREFUL ATTENTION TO THE TWO COMMANDMENTS OF LOCKPICKING, IF YOU DECIDE TO TRY IT FOR YOURSELF.
Also, the mechanism described here is a pin tumbler lock; there are a variety of locking mechanisms, but this is by far the most common. (Thanks to hbk from Reddit.)
A fantastic illustration of the picking method - https://www.youtube.com/watch?v=v9hhBJHfwJE
Pablos Holman’s TED lecture about hackers and problem-solving - https://www.youtube.com/watch?v=hqKafI7Amd8
An online supplier of lockpicking supplies (warning: laws vary by state) - https://www.lockpickshop.com/
A master picker absolutely wrecking some high-security locks - https://www.youtube.com/watch?v=fhF-m3CO0yQ