NAR - Model Rocket Safety Code

NAR - High Power Certification (Levels 1 and 2)

NAR - Level II High Power (J/K/L) Question Pool (pdf format)

NAR - High Power Certification Form Application (pdf format)

Tripoli Certification Information

Tripoli Motor Impulse Chart

Here is the 32 page Centuri Rocket Design Basics technical manual in Adobe  PDF format. It's chock full of Model Rocket basics, and is a good reference for any rocketeer. This is a large download, the file is appx. 2.5 MB in size, so download when you have the time. Click Here to download