You're learning a new workflow, it's gonna take a second. Don't get discouraged, you're just fighting habits from your old work flow, it'll be buttery smooth once you've built new habits.
That out of the way, you need to learn your hotkeys. Super+enter is gonna get you into a terminal by default, from there you want to get into your configs (check out /etc if it's not in .config yet) to find your Sway config. That little dude is your best friend now, it's your Options window from a desktop environment.
I haven't double checked your account, but I assume you're the tiling/floating poster from the other day? In which case I would suggest doing some research into class and appid filters within the config, this is how you're going to define windows to automatically float AFAIK