How to make the most of it?
Use workspaces, I almost never used it before because I was set in my ways, but after switching to tiling WM it’s a must and increases productivity by a LOT, I’ve grown so used to it that using windows with a mouse feels super clunky and cluttered.
Nope, they complement each other, you can have workspaces in non tiling window managers, but they’re a must in tiling ones. But the tiling does play a very crucial part, for example my workspace that has the terminals can have several terminals depending on what I’m doing, and being able to open/close terminals and having the remaining adjust is a big part of why I use a tiling window manager. It’s just efficient because 99% of the time when you have 2 apps open you want to look at both simultaneously, so not having to move stuff around with the mouse makes that easier, and for the remaining 1% you just move the app you don’t currently care about to another workspace, so it’s somewhere easily accessible when you want to.