Listening is important. That is the way babies learn - they listen and after much time, imitate.

Here is a good website, the BBC (British tv and radio), which has short articles that you can listen to the reporter reading while following the text.

http://www.bbc.co.uk/worldservice/learningenglish/language/wordsinthenews/

I wish your learning was for legal purpose if you have visited my profile, I would like to know how much do you know higher technology as well. 

Thank you so much with your sincere advises.

You need feedback - specifically, someone who will actually guide you out of bad pronunciation habits and help you sound natural and clear.