Here's a summary of the links to check your compliance:

IRS  --  Click here.

Calif. Secretary of State  --  Click here.

Calif. Attorney General  --  Click here.  (Doesn't apply to religious NPOs.)

Calif. Franchise Tax Board  --  Click here.

And here's a summary of reporting requirements:

IRS  --  Click here.

Calif. Secretary of State  --  Click here.

Calif. Attorney General  --  Click here and locate Form RRF-1.  (Doesn't apply to religious NPOs.)

Calif. Franchise Tax Board  --  Click here and locate Form 199. -- And click here to find out about the e-postcard.