Also, there's a video that auto-plays when you load the page. You've been warned.
Source
From the announcement:
Hello all, in collaboration with Miniwargaming we just released our very first DVD terrain tutorial on how to design, texture, detail and paint gaming surface and fill it with awesome looking terrains! The DVD also features water effects tutorial and Tomb World gaming surface tutorial. And the best thing of all is that it's FREE for grabs while the stocks last.
Enjoy and thanks for reading!