Afternoon @Ryan_Moye, as someone who is working on the same journey you are, my advice is to do the Complete Blender Creator course. While the Environmental Artist course does teach you a few things it primarily focuses on refining skills you will learn in CBC and completely ignores a few areas that you will want to know.
Later on, when you are ready to start modeling characters for your game you will want to grab the Charactor Creater course and go through that one as well. BCC will give you a more in depth look at things like sculpting and animation.
Good luck and don’t forget to share your progress, many of us love seeing that stuff and, there are plenty of people here who can give you constructive feedback to help you improve on your work. One word of advice on that track… don’t try and get to in depth into learning texturing and materials in Blender, that stuff doesn’t export to the game engines very well so you will end up having to re-create a lot of your work with a different system.