The Libertarian Party of California has posted recommendations on the propositions on the California Ballot.
The Libertarian Party calls for a No Vote on the bond issues – Propositions 1, 2, 3, & 4:

Proposition 1: Veterans and Affordable Housing Bond Act of 2018 Vote NO
Proposition 2: No Place like Home Act of 2018 Vote NO
Proposition 3: Water Supply and Water Quality Act of 2018 Vote NO
Proposition 4: Children’s Hospital Bond Act of 2018 Vote NO

The Libertarian Party urges a Yes Vote on Proposition 5 & Proposition 6
Proposition 5: People’s Initiative to Protect Proposition 13 Savings Vote strong>YES
Proposition 6: Voter Approval for Increases in Gas and Car Tax Vote YES

The Libertarian Party has no position on Proposition 7, concerning Daylight Savings

The Libertarian Party urges a No Vote on Proposition 8, Proposition 10, and Proposition 11
Proposition 8: Fair Pricing for Dialysis Act Vote NO
Proposition 10: Affordable Housing Act Vote NO
Proposition 11: Emergency Ambulance Employee Safety and Preparedness Vote NO

The Complete Libertarian Voting Guide to the California Propositions includes explanations of the
Propositions on the Libertarian Party stand on the issue: see the Guide @ https://ca.lp.org/voting-guide/