Level 1 Certification requires 2 core classes; Nutrition 101 and Serve-it-Safe. Both class material can be found below. Once completed, attach certificates along with a member and certification application. Both applications are found under the "SNA Membership  & Certification" tab on the left. Additional core classes and information can be found on the link below. 

SNA Approved Core Classes - Additional Information 
Link
http://schoolnutrition.org/Certificate/Approved-Nutrition-Education/.