Here is an interesting thread on our Forum at LingQ on this subject. There are a number of interesting comments on the thread.I had this to say amongst other things. “You tell your brain you want to learn another language and that you think you can do it. Then you feed the brain a lot of interesting and enjoyable content. Occasionally you help the brain by reviewing some words or rules or tables, but mostly the brain learns on its own, if you treat it nicely. “ What do you think out there?