While you study for the N3 JLPT don't forget that your real goal in studying is to interact with people, the final goal. So why don't you practice speaking while you study, kill two jobs at once.If you really want to learn to speak Japanese the way Japanese learn you need to start from how Japanese kids learn to speak, the natural way by listening, copying, picking up new words, listening to lots of different speakers and being bombarded with new words and having to speak full sentences quickly to survive.
Here is a new book that will help you learn how Japanese kids learn Japanese
Further reading click here
Here is a new book that will help you learn how Japanese kids learn Japanese
Further reading click here
