Wow… Thank you for your amazing response. I appreciate it so much. Apologies if my original goal in mind was stated very vague. Since I was originally taught programming in a way to get a job as fast as possible, learning JS, various web frameworks, NodeJS, etc. I feel like I have a gap of knowledge between myself vs “CS majors and MSCS” programmers in terms of my knowledge of theory + “core CS fundamentals” . I’ve been trying to fill that gap recently, by teaching myself various CS fundamentals and was just curious to the best way to approach that. I wanted to note I really enjoy learning and teaching myself these fundamentals in my free time (vs. forcing myself to do this). Also worth noting I have been doing fine at my current job in terms of performance. These are just my own internal thoughts.
My thoughts are still all over the place and I’m rambling, but you definitely helped me with a starting place! I guess Impostor Syndrome still sets in every once in a while 
. I appreciate your help! You are definitely right about the Elixir community though. I have been starting to try and get more actively involved and it has been an amazing experience so far. Thanks again for the thorough insight and sorry again if my thoughts aren’t completely clear.