May I use all or part of the Crash Course in a presentation to my group/community/friends/etc?

Absolutely!  In fact, we strongly encourage it.  If you would like to use all or part of the existing Crash Course in a presentation, you may.  However, you may not alter the Crash Course content for this or any other purpose without specific permission.

Chris asks three things in return:  First, to be given credit for his work; second, to have his URL (ChrisMartenson.com) included as part of your presentation, and third, that he be provided with feedback on how well-received the materials were.  Thank you for helping to spread Chris' message.