hashnode.com/post/react-tutorial-using-mern-stack… looks like pretty good and straight-forward as a guide. I've got a few freelance jobs and a few other people I help out, but if you're new to coding and find you need any help I'm more than willing to give basic assistance, even though it's not my main focus. I know things can be tricky when you're training in something totally new. On the other hand I'm wary about appearing patronising and I don't want to overplay my ability to help, but don't be embarrassed to ask if you get stuck :).
Or I might even be able to write a guide myself if you don't need it urgently, and maybe other people at work could use it too? Though I don't think I'll get chance for a couple of days, so if you and your work need it urgently it wouldn't be so easy, but it might be a useful exercise for me to write a proper guide.