Go to https://www.roblox.com in a web browser. If you are logged in this will take you to the Roblox Home page. If you are not logged in, click Log In in the upper-right corner and sign in with the username and password associated with your Roblox account. If you do not have an account, click the green button that says Sign Up and sign up for an account.

Click on any game. When you arrive at the Home page, there will be numerous game recommendations for you. You can also click the Discover tab at the top to see a list of games.