Something like Darkenvy's #1 green wireframe with antenna(*) symbol could be super friendly for kids and less literate populations worldwide, who crave books/Internet learning, just don't have these, and need such a strong symbol they can aspire to!
(*) symbolizing energetic sharing/collab more than WiFi addiction ! Enhancing this visually-emotive allure would be Tremendous.
We could use such energetics combined with a library symbol (Temple of knowledge similar to archive.org logo? WiFi-like radio symbol around its steeple? IF any such learning/content symbols are highly recognizable to all worldwide, literate and non literate!)
Might there be a way to depict a single book having a WiFi-like sharing halo on top (possibly an "open book" like Anish's, or any other knowledge object, like an ancient scroll or film-reel if nec ?)
Conversely here's a cute visual, with far too many books! http://previews.123rf.com/images/alexmit/alexmit1008/alexmit100800031/7680677-Question-symbol-from-coloured-books-Stock-Photo-books-book-library.jpg