You've already done one of the most important parts: move somewhere where that language is spoken. Next: get everyone around you to speak German to you, and speak German to them (obviously, ask when you don't understand or need a term). Instruct them to always correct you, and when they do, repeat the correct sentence a few times out loud. Watch television. Read. Socialise with locals, not expats. Look up or ask abou…
Thanks for these tips. Bad thing is that I am damn introvert and know only other few foreign people only. Any ideas on socializing with locals?
Practice some team sport.