Does anyone have good resources for getting started on these kind of customizations? I’ve done basic stuff in the past like applying themes to whatever DE came with whatever distro I installed. But I’d like to get started learning to use tiling window managers, custom floating bars, etc.
Look at somebody’s setup, check the tooling they use to achieve it (e.g i3+Polybar or Sway+Waybar) and follow their respective tooling’s first-setup guides / install guides
From there, familiarize yourself with the way they work and how to configure them.
From there, you’re already on a good path.
Whenever you have questions, just ask! :)