Tere! While, this is probably in jest, I've been attempting to learn the language for a few months now. :)
Memrise[0] has some Estonian courses. It might not have the best quality, but it's available as a mobile app. I've been going through with "Basic Course in Estonian" which starts off with vocabulary before moving onto sentences. It's not a replacement to understanding the grammar, but it's a start.
Keelekikk[1] has a free Estonian course targeted towards English (or Russian)-speaking adults. You also get paired with an Estonian teacher that you can email. It doesn't have recall like the Memrise or Pimsleur methods, it's worth pairing with the Memrise Keelekikk course.
