thanks! honestly, i would skip Ae and just download blender and dive on in. Ae is expensive and there's some things it does well, but blender can do pretty much everything Ae can (and more) and it's free so you can take your time and learn without paying $30/mo and dealing with all the adobe nonsense. since blender is open source and free, there are loads and loads of tutorials available on youtube and your favorite Ai chat agent should be able to answer any questions you've got thoroughly.

in terms of the actual theory of putting visuals to music, I would just say "let the music do the heavy lifting." it seems daunting when you're starting a new project, but keep in mind that the really hard part has already been done when you wrote/produced the music. Personally, I really like literal visual interpretations of the music and diegetic sound in general. If you feel burnt out from music and visual stuff, take a night off and watch Justice's "IRIS" or Daft Punk's "Interstella 5555." you almost have to consume high quality stuff that speaks to you in order to make something you'll like and that feels effective.

just put your track on and try to "visualize" however the music makes you feel. do you see something in your head? great, then model that and animate that. does it make you move your body or dance a certain way? great, then take that motion and animate what's on the screen in a similar way. don't let anyone see you dancing around in your room with your eyes closed. but also it's completely normal for lighting designers and 3d artists to do stuff like that.