hey! so all you gotta do is unzip the file. there's two methods from here
if you want to go GUI method, right click the file called `Celeste64` and go to properties. tick something along the lines of "set as executable" and then you should be able to double click it and start.
another method, in the command line, cd into the folder and type `chmod +x Celeste64`. then, just `./Celeste64`. it shouid start right up there :)
welcome to linuks!