I've studied many languages over my life, but the only one I ever really got beyond a beginner level at, was German, and that was because I was able to take classes with a teacher who was from Germany.
I've neglected my German for years. I dropped it after I found that I knew and understood multiple German words that I didn't know the English translation to (I was afraid that I was forgetting English because I had studied so much German).
Now, I'm thinking of picking it back up again, and possibly other languages. But how effective is solo learning really? Has anyone actually done a study on it? I personally haven't had much luck. Yeah, I know there's websites, but I was banned from wordreference a few years ago for being an American (lovely site). So now I really have no site I can go to if I need help learning any language. I'm at a loss as to what to do. I have my old German books, so I figured I could brush up on my German with that (I was once an upper intermediate). But even if I did do that, what would be the point if I can't actually use it with anyone? I still listen to German music from time to time, but that's the only exposure I ever get to German anymore.