DO chat with native speakers, watch movies and TV shows and listen to songs. DON'T memorise lists of slang or idioms. They won't tell you when or where to use them, and in most cases their use depends on regions or trends. Learn the expressions as you encounter them in real use.

Just practice speaking like an educated person. Colloquialisms will develop naturally from there.

I think it's to learn some basic grammar first.

Privet, you can learn colloquial English using the Russian language here at Italki: http://www.italki.com/knowledge/Learn-english-russian.htm Here are English teachers who speak Russian at Italki: http://www.italki.com/teachers/1-3-English-Russian0-999999-0-0-1.htm You can find an English language partner who speaks Russian. Send them a message and ask them to be a friend, then you can arrange to talk on skype or msn etc. http://www.italki.com/partners/1-Russian-English200-0--0-0.htm Here You can order American Movies Translated to Russian with subtitles. Movies On Russian DVD http://www.russiancddvd.com/movies.html You can select English audio with Russian Subtitles or turn to Russian audio and English Subtitles. Or Russian Audio and Subtitles.

Watch “Friends”.