The mountain regions run from early October to early January. The desert regions are from mid October to late January. I hunt in the desert region and this year the ducks showed up in late November. I should get plenty of activity through the end of the season.
I hunt them by pond hopping, but we have some large reservoirs and smaller lakes that people duck hunt on. If you have decoys and boat, that would be a good way to go.
If you want to pond hop, you will need to get out in your AO and find where the ponds are. You want an area with a lot of stock tanks so you aren't spending all of your time driving from one to the next and also so you can push the ducks from pond to pond. The harder the area is to access, the better. Nothing worse than being right behind another hunter that just checked the pond you are at.