I’ve just started with Lightroom CC, uploaded some photos straight from my phone, and want to rename them.  Is that possible?  I can’t seem to figure out how to do that.

Personally, I never bother renaming the original files. I have folders on my hard drive with the same names as my categories and then make a folder for each recipe under them. When I pull the raw files into Lightroom, I make collections with the same names as the categories and the recipes. When I finish editing, I export the images as JPG and auto rename them through the export popup and save them in the recipe folder inside a new folder called “Recipe Photos” that also gets created in the export popup. Does that make sense?