Learn Computer- Be Hacker

Do not you know anything about computers? This is YOUR app Do you know very little about computer science and want to improve? This is YOUR app Already a hacker but you want challenges? This is YOUR app
What makes this app different from all others?

Everything you need to become the best computer in the world is here, responsible design and material design.
* Design for any device
* Free
* Different themes / designs for day or night
* Download area