That's going to depend on the kind of photography they like to do and on the kinds of photos they've already made.
I believe most folks who are drawn to photography have an innate desire to be a visual storyteller. They've probably seen photos by other photographers that have moved them, inspired them. They've almost certainly been using their smartphone camera to do photography. They've at least developed an idea or three - from the other photos they've seen, movies, YouTube, etc. - about how to compose a shot. That's going to be reflected in the photography they've already done.
I'd like to see at least a couple of examples of photos they've made. There's going to be something positive in them; something that can be built upon. It may they're appreciation of good light, compositional instincts. a sense of the decisive moment, or other qualities. I would point those out and call attention to qualities they may not even be aware of as being good.
Then it's time to look for the low-hanging fruit, the most obvious things they could try that would improve their photos. One of the recommendations I like to make, regardless of the genre they enjoy, is to seek out the B&H YouTube channel and look for their "Event Space" playlist. That is filled with presentations by some really talented photographers who work in a wide variety of genres. Just about anybody can find a photographer in the "Event Space" whose work they like and whose presentations they find inspiring.
It's a free mentoring program. Take advantage of it. It's basically a free series of workshops taught by some truly outstanding artists.