A curated list of awesome guides, tools, and other resources relating to the security and compromise of locks, safes, and keys.

If you want to contribute, you are highly encouraged to do so. Please read the contribution guidelines.

Books

Practical Lock Picking: A Physical Penetration Tester's Training Guide - Detailed instructions and exercises designed for professional physical security specialists, consultants, and red teams.

Contests, conferences, and events

Chaos Communications Congress (CCC) - CCC hosts the German Lockpicking Championships.
DEF CON - An annual infosec industry conference which is popular with many lockpickers featuring a locksport contest.
Hackers On Planet Earth (HOPE) - An annual conference often featuring a locksport competition and presentations on physical security.

Art of Lockpicking - Educational website with animations detailing the process of picking locks.
Beginner's Guide to Security Pins - Short article guiding beginners comfortable with picking padlocks towards an understanding of more complex locks.
Deviant Ollam's Lockpicking Video Presentations and Advisories - Collection of physec talks and locksport advice for all skill levels from a world-reknowned expert.
Easy Pickings - Mini Lockpicking Manual - A widely-distributed beginner's manual with diagrams showcasing how to pick various entry-level locks.
MIT Lock Picking Guide - A famous introductory text by Ted the Tool.
Lockpicking Forensics - A website "dedicated to the science and study of forensic locksmithing."

The Open Organization Of Lockpickers (TOOOL) - Worldwide association of lockpickers with national, regional, and local chapters.
Locksport International - International association of lockpickers who offer help starting new locksport clubs and groups.

Keypicking.com - A bustling online forum for the discussion of lockpicking and locksport.
Lockpicking101.com - One of the longest-running online communities "dedicated to the fun and ethical hobby of lock picking."
LockWiki - A community-driven reference for both beginners and professionals in the security industry.
/r/lockpicking Subreddit - A subreddit dedicated to the sport of lockpicking.

Safe Ventures, Inc. - Retailer for safe-opening tools who also offer paid training courses.
Southern Ordinance, Inc. - SouthOrd® is a manufacturer of lock picks and professional locksmith tools; individual replacement picks as low as $1.50 USD.
Southern Specialities - Retailer of numerous lockpicking sets, pick guns, and more.