I can only tell you how I started : a) trying to catch the words from English songs, which I was really fond of; b1) reading a grammar book and doing the exercises b2) reading a bilingual book Of course taking lessons and visiting Country where English is spoken possibly with some social activities to do there could help, but surely you know this! When I was in the USA I enjoyed hiking with the Sierra-Club, that was a lot of fun, and gave me an opportunity to speak English.

Study it.

By practice with watching video and audio in English :) And, of course, you need a good teacher to correct your mistakes. Use communicative language teaching (Murphy or Headway Course). It will be most effective. And you can try to make conversation with others native english speakers here :) http://en.wikipedia.org/wiki/Communicative_language_teaching http://youtube.com/MIT http://elt.oup.com/student/headway/

come and become language partner of me. we can learn it together.. :)

I assume that anyone who is smart enough to show up on a cultural site (like Italki) is also aware that a good teacher or mentor, or a learning environment will give a good start in almost any cultural subject. That's why I did not emphasize this in my answer.