Hi Andrys
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If, when you write "fluency", you mean that you want it to be easier to speak in English, then the best tip is:
Practice, practice, and more practice!
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Even if you have no one to talk to, you can still practice by singing in English, reading out loud, or even talking to yourself.
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If your PC has a microphone and speakers, you might try finding some like-minded people online (i.e., people who also want to practice speaking English) and have live, online conversations with them (using Yahoo! Voice or Skype, for example).