Just fooled around with it and lost the 2nd tutorial (!), but I think I'm finding my way. Much slicker and more polished than I expected, it seems like a lot of fun so far.
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Actually rather than restart the tutorial from the beginning(it would be nice if you could save it, or there was an autosave) I just jumped into a skirmish game and found that with the basics I was pretty much able to pick the rest of it up on my own. I still lost to the AI, but by only one point, which isn't so bad, I guess.