I've come to a point where my site is operating at a very base level. Images aside, it's lean, utilizing only what's absolutely necessary, with zero fluff. What I want to do now is go back through and learn Node and Express deeply: to really understand which modules are capable of doing what in Node; to very clearly understand routing in Express. As it is now, I have a very tenuous grasp on this information. Moving forward, I want to arrive at a point where if I'm interested in creating some feature or changing some bit of operability, I can avoid having to Google absolutely everything and just do the thing I have in mind to do.
Obviously, I'll need to go back to the beginning with any new tools I adopt, but as it stands now, that will be minimal; my whole approach has been to learn to build what I want to build without having to rely on extraneous tools. And with few exception -- Express and Jest and Jessica, the ES6 rendering engine I'm using -- I've managed to stick with that.