If you're on Logic, there's no better dude than this guy-
https://www.youtube.com/@MusicTechHelpGuy
98% of what I've learned how to do in Logic was either exploring it on my own or from that dude. His demonstrations are great and he's not all douchey. My best piece of overall advice for making things sound better that's quite easy is top-down mixing. It can be a controversial subject but IDGAF, it works for me. Basically it's loading up some plug-ins on your master buss (Stereo Out on the mixer in Logic) right at the start of tracking.
I just use that Townsend compressor, set it to the first preset and don't touch it. It keeps everything glued together nicely and it's really transparent, so I know right away if a tone isn't working because the track is already sounding like I want the finished product to sound. The reason people argue against it is some people get carried away and start putting a bunch of EQ in there because their instruments are all out of whack with each other to begin with and then when they take all those plug-ins off to have the song mastered somewhere professionally, it sounds like total dogshit and the mastering place either rejects it or has to mix it for you.
There's also some traps people can fall into with compression and limiting without realizing it. Fletcher Munson is another issue where someone wants to limit the piss out of something to get it really loud and it ends up brickwalled. I've seen more musicians than I ever expected claim they couldn't hear brickwalling on albums when it was happening, so I hope those people never get their hands on a limiter!
I'm going to make a thread in the Recording sub about general questions. There's various levels of experience and DAWs here, so that should be a decent pool of info to grab from. Like if you want to figure out how to do up some reverse cymbals or a reverse reverb in front of a snare or vocals, little tricks that spice up a song. For now I'm off to work on my song cuz I'm SLACKIN!