This isn't a recommendation as such but may be of interest to you: http://learnlockpicking.com/ http://learnlockpicking.com/ They sell a re-keyable pin tumbler

This isn't a recommendation as such but may be of interest to you: http://learnlockpicking.com/ http://learnlockpicking.com/ They sell a re-keyable pin tumbler lock that comes with a variety of different pins so you can practise increasingly difficult configurations as you learn.