https://docs.google.com/document/d/1Oax3j0-wsYlNQCfgJTtPHlOWJ-ilRvk-I9E3mhiyl5I/mobilebasic#heading=h.mxlya9axneww
http://www.deanhume.com/ten-things-you-didnt-know-about-webpagetest-org/