What was the most difficult aspect of researching this topic?

For my final project, I researched how foreign languages are taught online. The most difficult aspect about this research was going more in depth of how languages, especially of different alphabetical systems, are taught specific to a country's or region's culture and usage. Research data was lacking in more detailed areas of teaching a foreign language, such as the sequence of strokes required to write a non-roman alphabet in an online environment. If a foreign language class takes place online, are students required to learn the foreign language's keyboarding as well? Other than that, there were an abundance of articles and demo lessons available to get a general idea of what an online foreign language course is like. It makes me wonder... the online approach makes sense, and for-profit companies certainly make it sound easy, but will it really work, or is it a lot of marketing? I'll give it a shot one of these days.