languageguide - SERP Analysis

https://www.languageguide.org/

https://www.reddit.com/r/languagelearning/comments/15gwqeb/selflearning_language_guide_from_0_to_b2/

https://www.facebook.com/languageguide.org/

https://trickstoteach.wordpress.com/2013/07/04/languageguide-org/

https://digital.gov/guides/plain-language

http://languageguideorg.blogspot.com/

https://effectivelanguagelearning.com/language-guide/language-difficulty/