Awesome a lot of companies should follow this example and post a similar video on their websites. Very inspiring thanks for creating & sharing that video blizzard!
look at art colleges in london, one of them is bound to have a sculpting course. example http://www.chelsea.arts.ac.uk/courses/shortcourses/fineart/introductiontosculpture/#
I recommend to learn texturing yourself. It realy not so hard. Use this guide http://steamcommunity.com/sharedfiles/filedetails/?id=123397498 for example.
I'd look at the grass in Dota2 as an example, even if it's suppose to be simple, there needs to be enough contrast and details to make it interesting and read like grass.