Make sure to be careful with the sources used. Here is a list of sources that attempt to remain non-partisan:
California State Voting Guide: Basic Informational Overview
http://voterguide.sos.ca.gov/en/propositions/
Ballotpedia:
https://ballotpedia.org/California_2016_ballot_propositions
From the League of Women Voters:
http://votersedge.org/en/ca/ballot/election/area/42/section/measures?id=statewide-42-ca
Click on chosen proposition.
For each proposal they have categories:
1.What is the proposal?
The “What is the proposal” category contains non-biased information on the cost of the proposal, the pros and cons, and major supporters and opponents.
The “Who contributes money” category reveals the interests for or against the proposition.
Make sure that you utilize all three categories to find out about the proposal.
LA Times Article:
KQED’s ongoing voting information, includes audio and video pieces on various proposals and candidates. This is updated every few days, depending on their reporting.