Serious Sam 3: BFE

Serious Sam 3: BFE

Custom maps, mods, skins & campaigns
Discover and download custom maps, character skins, weapon modifications, skins, enemy modifications, campaign mods, and much more. Plus, click here to learn more about creating and sharing your own mods.
Good, and up-to-date tutorials for SS3 Editor?
As in the Subject, I'm looking for a good set of tutorials - written or video - for using the SS3 editor? Would love to learn and make some maps and such, but it's a very difficult editor to figure out - a lot of things don't seem very "up front". I'm guessing there's a lot of keyboard shortcuts involved :p

Anyway, if anyone can link to some, or point in the right direction, it would be very appreciated!