I've lived in So Cal and been completely destitute, so while some of my ideas may seem odd to others, they really did work for me at the time.
I don't know if they demand is still high, but when I was living there a few years ago, aluminum went for a very pretty penny. Like two dollars a pound, which adds up fast. So recycle a ton, and make a note to look and collect discards. I used to carry a plastic bag in my purse and pick them out of trashcans, off the street, etc. Also, if you have a truck or access to one, maybe you could haul things away for people and recycle the aluminum that way as well. People will often give away non working appliances for scrap.
May be for the squeamish but learn to dumpster dive and learn what dumpsters are really good. If you're in an urban area the dumpsters can be great.
Do you qualify for any aid? If you're on food stamps, learn to clean with all natural products and also to use them in health and beauty (if you don't already of course). It keeps your funds in your pocket for other bills.
My area was pretty good about community services so call 211 and generally look around to see what's available. There were lots of food banks in my area, as well as places to get free health care and even free clothes, etc. Also, check out your local salvation army, the office/center not the thrift store (you can go to the thrift store to find out where yours is). They usually offer bread tithes as they call it once a week with a big basket of food once a month. The weekly baskets give out mostly bread but also other non perishables. The one that was where I lived also had a free store only available to people on their help lists, and would give out food baskets and toys during the holidays.
Really take advantage of your solar power. Line dry if you can, but also make a solar oven, and paint some milk jugs black to use for water heating.
I know a lot of this sounds off the wall, maybe, but these things really helped me when I had nothing, literally, to my name. I didn't have my dd at the time so I did have a bit more time on my hands, but they were life savers in addition to things like keeping change and learning prices, etc.
Another tip for anyone, not just from so cal. would be to stock up and pay ahead whenever you get a windfall. I know that a lot of people say it's best to save, but I find it often got petered away one way or another...even if it wasn't spent irresponsibly. Ie, if you know that you cannot afford rent for a while, just pay it up so you won't be tempted to make a car repair, etc. While you think the car repair is necessary it's not AS necessary as the roof over your head, kwim? Of course you could have a lot more willpower and financial intelligence than me, so that tip wouldn't be a necessary one.
Hope some of these tips help you!