I've finished reading Contagious: why things catch on. It was an interesting read but not as much I would have expected it. It does explain some elements on what makes things contagious (or well known and viral) but that is about it like you still need to implement these on your own through different tactics 

Decent read but I have read better about this topic

https://www.goodreads.com/book/show/15801967-contagious