As above... the Ruger LCP
is not available for sale in California. The only people who can buy an LCP in CA are active law enforcement officers. You can not buy an LCP, or any other handgun not on the approved California roster, on Gunbroker from an out of state seller and import it. The only way you could get an LCP as a California resident is to purchase one second hand through private party transfer (PPT) from a law enforcement officer who wants to sell theirs.
If you are determined to have a .380, the Bersa .380 is a good alternative. It's gotten good reviews from users (as opposed to just from gun writers) and is priced reasonably. As far as ammo, the new Hornady Critical Defense round appears to give excellent performance from live fire testing I've seen. I use Federal Hydra Shok ammo in pretty much all my defensive applications, including .380, but that ammo has become next to impossible to find as it is widely issued by law enforcement agencies.
All that said... if you are new to handguns and your focus is self defense, I always advocate a revolver. .38 Special or .357 Magnum, firing .38 +P ammo.
Regarding the gun lock... if the gun you are buying is not furnished with one, you need to purchase a California approved lock within the 30 days prior to taking delivery of the handgun you are purchasing. You have to provide a copy of the cash register receipt. Most dealers will sell you a lock on the spot, if you don't have one.
You might want to check the list of Sonoma County dealers listed in the Get Connected forum on this site. The only ones I would stay away from are Helm's, because they tend to treat customers like dog dirt on the bottom of their shoe, and Western Sport Shop, because they do not handle any handgun transactions by store policy. Also, Big 5 stores do not carry handguns or transact handgun purchases.
If you around Petaluma, any of the three dealers listed can square you away with minimal fuss. In the Santa Rosa area, Ron over at Suron Enterprises is rock solid as are the folks at Markell. The only caveat on Markell is that he carries a lot of stuff you can't buy because his clientele is predominately law enforcement officers. He might even have an LCP in the case... but you couldn't buy it.

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Quote:
"A gun is as good or as bad as the man using it. Remember that. "