For ANY language, you have to immerse yourself in the language. You must surround your world with the language, Whether friends, TV, radio, or places in the community. You have to listen to develop an ear, and you have to speak what you know, over and over, and even when you dont feel like it, or are frustrated from making mistakes. It always pays off, and soon youre on the road to becoming billingual.

Find something that you enjoy doing and be consistent, everyone is different.

However, no matter what strategy you prefer to adopt at last, you must keep in mind all the time to modify your methods and revise your learning in order to learn with more efficiency, There is no one-fits-all strategy to every learner and you may hardly master a language in a year for most ordinary learners. 

Good luck. 

Chatting and watching movies.