The best place to meet a lot of polyglots is an event where hundreds of language lovers meet in one place to practice their languages.
There are several such polyglot events organized all around the world, and so I decided to go there and ask polyglots about the methods that they use.
And so I met Benny from Ireland, who told me that his method is to start speaking from day one.
He learns a few phrases from a travel phrasebook and goes to meet native speakers and starts having conversations with them right away.
He doesn't mind making even 200 mistakes a day, because that's how he learns, based on the feedback.
And the best thing is, he doesn't even need to travel a lot today, because you can easily have conversations with native speakers from the comfort of your living room, using websites.
I also met Lucas from Brazil who had a really interesting method to learn Russian.
He simply added a hundred random Russian speakers on Skype as friends, and then he opened a chat window with one of them and wrote "Hi" in Russian.
And the person replied, "Hi, how are you?"
Lucas copied this and put it into a text window with another person, and the person replied, "I'm fine, thank you, and how are you?"