If you choose to play an assassin, you control only one hero. If you choose to play a general, you control summonable units as well as a hero.

What do u mean tutorial, demigod is very easy to learn to play but more difficult to master. I doubt their will be a much of a tutorial because their really isnt that much to get.

I think it's an excellent question and you just get to control 1 hero.  It's hard to understand if you never play dota.  

It's ok, they are nearly identical so it is a common mistake. Unclean Beast (Assassin) and Regulus (Assassin) are more different then Unclean Beast (Assassin) and Erebus (General). Given the promises on how the Demigod Assassin/Generals mechanics are so different and of the previews on the game I find it impossible for such similarities to be formed... but they have. Also look at Torch Bearer and Queen of Thorns, similar abilities between 2 Demigods that should be A WORLD APART in gameplay. I guess thats why Torchie has been demoted off the roster so people won't realise they are half alike as an Assassin and a General.

Thanks for the replies. I understood the gameplay, but I asked the question cause it just seemed like there was something missing. Yet once I kept playing it, it got better.