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.