This app has fundamental information about Robotics. If you are looking to learn Robotics and you have no idea where to start.
This would give you an idea of the fundamental topics related to the field.

It is a collection of topics and articles for the most important concepts of the field of Robotics for beginners.

You will learn:
What is Robotics?
Why use Robotics?
Application of Robots
How can we use Robots in our lives?
Some basic concepts and more.