Easy.
1) Pump running half an hour or so
2) Test everything but CYA (because you won't have any in tap water)
3) Adjust pH if needed
4) Fumble around with CYA and a sock. If you're not positive of your pool's volume, shoot low. You can always add more later.
5) By the time you've filled the sock and placed it in the skimmer or suspended it in front of a return, you've probably killed half an hour.
6) Recheck pH. If it's not between 7.2 and 7.8, adjust it again.
7) Add 2 ppm bleach. Your CYA will be close to zero so soon after adding, so don't overdo the bleach target for a couple days. Just keep it at 2 or 3 the first couple days. Odds are, it will all disappear every day at the beginning. That's normal.
8) When the CYA is all dissolved, maintain FC adequate for your targeted CYA. If you tried for 50, target 6 when you dose.
9) Check pH every day and adjust as needed. With SoCal tap water, high TA will tend to drive pH up fast until you get it worked down some. The acid thirst will decrease in time.
10) After a week, check CYA. Maintain FC level adequate for that level of CYA. If you need to add more CYA, add it.
11) As soon as the water is warm enough to swim in, it's safe to get in.
By the end of the first week, your pH should be fairly stable and the pool should hold some residual FC overnight. After that, it's easy. Just keep the pH in range and feed it every day with bleach such that the FC never dips below the minimum for your CYA. In a couple weeks, you'll have figured out your pool's personality and daily maintenance will be no more difficult or time-consuming than brushing your teeth. If there's any other questions about the chemistry, help is only a post away.