This is important, because you need Roblox Studio to actually edit your game. Inside Roblox Studio, you can create new games by clicking + New tab on the left hand bar.

Inside Roblox Studio is where the bulk of game creation happens; this is where you develop your game, create objects/resources, test your scripts (and debug), and work with tools and templates ...

Once you've got the hang of basic movement, try some more advanced editing. There will be three main panels on either side of your game world: The toolbox panel allows you to insert models and ...