I don't know if there is a multiplayer mode or if it's possible to play a quick coop campaign or Vs battle, if it is then this would be a fun way to learn.
No MP or coop as of yet with this game.
I don't use Skype, but you can post questions here and I or someone else who visits this forum regularly will try and answer to the best of our ability.
Andrey(lead dev) stops in also occasionally and usually corrects us if He thinks our answers are full of shit.
And will tell you if your idea is the worst idea he has heard in X about of time.
Just post questions here, is fastest way really. Next game *might* have some kind of MP. MP is a time and money issue. With limited resources it comes down to where you get the biggest bang for your buck.