I mostly use italki, a lot of teachers advertise on gumtree in the UK for face-to-face lessons and will also do Skype lessons.

Ah, thank you! I'll definitely be signing up there, then. I'm not in the UK, and our version (craigslist) doesn't really have the userbase for language lessons, but I might try posting a want ad.

A language learning site that greets me in computer-translated German "Werden Sie fließend in jeder Sprache" makes me hesitate. Am I supposed to turn into fluid?