As much as I love this game, I think some of you are ignoring the fact that relative to most strategy games with in-game tutorials (apples and oranges perhaps, but perhaps that's the fault of the devs), GalCiv II has very poor introductory material. The video tutorials do indeed gloss over many important game mechanics, and if someone isn't familiar with TBS game conventions, then the manual and tutorials alone might not provide the information they need to get up to speed as quick as they may like.
However, I do agree that the online material is very extensive, and should be able to answer most, if not all of the average gamer’s questions.
Of course, I'm one of those people that the almighty Frogboy disagrees with concerning game mechanic transparency. I like it complicated, but I also like to know the who, what, where, when, and how of every little detail in the game. That being the case I really wish I could find more info on the guts of this game. Maybe I need to spend a few days looking through the Galactopedia.