We feel these are the top three open-source guides available out there right now, and should give everyone a solid understanding of lock picking basics.
LSI Guide from Locksport International
CIA Lock Picking Field Operative Training Manual
If anyone knows of another great resource, please post it to the comments
These lock picking tips and techniques provided in this article are only to be used in accordance with all local, state, and federal laws and provided for lock sport (recreational lock picking) use only. Lock sport should be used to learn about the illusion of security, and how to properly protect yourself and your possessions. Don’t do anything illegal.