Well, can you define what you mean by a "real project" a bit more? Your mention of HTML, etc. makes me think you mean a web app, so if that's true, then you have some options.
The most-travelled path is making a Rails app. You can pick a app "type", such as a Todo app or a blog or a chat app, define some high level requirements to yourself, and start going. Or, if you have an app you've been thinking about, do that. You will learn much faster, IMHO, if you are working on a scratching your own itch.
If you don't want to go to Rails, you can look at Hanami or Pakyow or Sinatra or Roda. There's a ton to choose from.
Not sure if this is helpful. Reply if you have more details of your goals.