I think that there are plenty of online resources to help you explore concepts deeper and differently whenever they are introduced to you through a curriculum. Anything that you don't fully understand or want to get into deeper should easily yield google search results that are useful.
I'm 100% self-taught by way of the internet. I got into making levels for the older games, like Doom and Duke3D, and then got into modding Quake when it was still popular. At the same time I was playing with qbasic early on and then migrated to C all while learning how to take apart and modify existing games.. Then I got into reverse engineering and learned some assembly and started learning more about the machine-level way that things worked. From there I started learning hardware rendering in 2001 and doing stuff with OpenGL. I still remember what it was like to finally get a texture on a triangle, it was a beautiful thing.
Since then I've just been learning more and more about all the related topics. I know how, and have above-average skill at creating anything for a game, from 3d model geometry, animations, textures, sound effects and music, etc.. all just by exploring them on my own out of a sheer passion for game development.
Where there's a will there's a way! However, I do believe that some minds are more suited for dealing with things like programming. I got lucky there, and also got an early start playing with qbasic as a kid so I have a lifetime of working within the paradigms programming entails and it comes very easily to me. I've only one friend who never programmed before and decided to learn in his 30's, and he had a bit of a rough start but he's picking it up - and he's one of the folk who IMO has a mind for it to some degree.
But, as I said before, there are plenty of online resources - which includes all sorts of gamedev communities where a lot of people can explain things to you in a more 1-on-1 fashion, suiting analogies and metaphors to your needs in order for you to better understand whatever concepts you struggle with.