Where can I learn more about districting and redistricting?
There are a number of online publications and guides to redistricting, including:

What do the acronyms and categories mean on the demographic sheets?
These are standard categories included in the Census. Not all of the categories are relevant for creating district maps. Acronyms include:
NH: Non-Hispanic
VAP: Voting age population
CVAP: Citizen Voting Age Population
CVRA: California Voting Rights Act
NDC: National Demographics Corporation (the firm hired by the city to create the maps)

Need help?
Contact the city’s demographers at National Demographics Corporation: 818-254-1221 (phone and fax)  or LosNietos@NDCresearch.com.