List of topics I should learn to develop Oculus apps (maybe in order?)

Hi all. I'm a software engineer with experience in Java, JavaScript and Angular, along with HTML and CSS for web development. While I do have some programming experience (2 yrs or so), I have never developed a game or any sort of virtual reality app. I am interested in trying it out. I'm hoping you all can help me by listing as much as possible of what I will need to study/work with in order to do some VR development. For example, I can see that I will need to learn to use Unity and maybe Unreal, and I am assuming I would probably need to learn Photoshop. But what else do I need to learn? For now I just want to do some basic things to get my feet wet - perhaps an aim-and-shoot game or a fly-through-hoops game. I can get fancier once I've become comfortable with it all. Also, if any of you know of any Udemy-type courses or tutorials on the web that I should work through, I would appreciate knowing about those. And if there's a certain order in which I should learn these things, for example if I shouldn't learn Unity until I've learned X, I would like to know that too. Thanks for your input!