Learn by doing is one of the best way of learning. Sometimes you learn about something and then implement it. But because you have already read the scenarios, you can implement it easily. One of the best methods is to start doing, and when you face a problem try to find a solution. This will improve your problem-solving skills and will help you explore more. On similar lines, let's start with an application and we will see where we encounter problems and where can we see the need for a framework.