there is a lot of applications that giving some lessons about this language but if we will go to the country we will find that what we have learnt it was false and the perfect to learn the language is :
1: you have to see this country and try to engage with them.
2: try to make friends with some people who will show every side in this country and give you some pieces of information about the shops about the economic and the education and what the problems there.
3: You have to come to the country whatever you have a holiday and go to every city so you can have some experience.
Here are some tips to help you learn this language cause whatever you will read from the books you cant know the real language if you never went to the origin of it.