Lori Ajax, the state's top pot regulator, has been at the center of the effort to establish rules for a legal pot economy valued at $7bn.
Here are her thoughts on what to expect:
It's a question many people are asking: Can I buy legal pot on Jan. 1?
"You will, in certain areas of the state," Ajax says.
Businesses are required to have a local permit and a state license to open their doors for recreational sales, and that process has moved slowly.
So far, there is not a consistent pattern in the geography of legal pot.
Kern County, for example, has banned all commercial cannabis activity. Oakland, Santa Cruz, Shasta Lake and San Diego are among the cities that have embraced it and have licensed operators that will open Jan. 1.
San Francisco is running late getting licenses out, so legal sales there are not expected to start until later that week. In Los Angeles, the city will begin accepting applications to sell recreational pot on Jan. 3, but it could be weeks before any of those shops open for legal sales.
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