Legal Services for Prisoners with Children has some excellent resources.

Fighting for our Rights, A Tool Box for Family Advocates of California Prisoners outlines some basic tools that families of California state prisoners can use to fight for the rights of loved ones inside, and gives information on specific issues you may need to advocate about. Also included is an insert on Requesting Resentencing Under Three Strikes Reform.

https://www.prisonerswithchildren.org/wp-content/uploads/2012/05/Toolbox-final_for-website.pdf

Other LSPC resources can be found HERE