I haven't seen a decent tutorial on the new version, which is why I suggested working through that Help article. Julieanne Kost did a
short video and I suspect these two sources will be enough to get the OP moving.
What I most like about the new Edit > Content Aware Fill command is that you can tell it where to sample from, there's a preview, and there's an option to output the results to a new layer. The Apply button outputs that new CAF layer each time it's pressed, so you can fix one area of the image, Apply, then fix others without needing to close the dialog box, so you end up with layers for each correction and can fine tune them individually if you need.