Wow I quite enjoyed playing the demo (waited for it ever since galciv2 was released), though I think I sucked big.
At the end I had two wars going, but it was just me sending some ship into their territory, blowing things up and getting blown up. Nothing spectacular.
I also found some minor UI issues. E.g. on the planet view, I click on build ship, then I select new to design a new one and when I am done with that, I am thrown to the galaxy and not back to the planet, where I wanted to build the ship.
The ship designer sure is a lot of fun, but I couldn't get past small sized ships and there was very little stuff I could put on. At one point I decided I have seperate defense and attack ships, but I couldn't find out if that helped (or worked), because I ran into the time limit.
I have to play some more games, to decide if it's worth the money.
Any beginner tips (important techs, ship combinations, things to do)?