I am new to using marijuana in CA, do I have to join a collective?

Joining a collective is usually a requirement to purchase cannabis products in California.

The process is fairly straightforward. You will need to provide the collective a copy of your medical recommendation, your ID and some biographic information. You will also need to sign a legal agreement that specifies the terms of the collective you are joining. This usually takes just a few minutes to complete.

Note too, that there is nothing stopping you from joining multiple collectives.