Long story short:
I don't preorder anything, early access (almost) anything, or buy anything day-of-release. I look at reviews, actual gameplay, and the opinions of people who know jack, boot the game, and do stuff blind. And by "blind" I don't mean skipping tutorials, I mean "playing the game without searching for an explanation." If the tutorial is buried somewhere obscure within the game and they miss it, that's acceptably blind. If the tutorial is "reading a wiki" that's acceptably blind. If the tutorial is a 30 minute Youtube video embedded into the main menu, that's acceptably blind.
Because in all three of those situations I am not likely to find or go to the effort. And it really pisses me off that a lot of smaller studios think that they can get away with a series of video tutorials. These are not tutorials, they offer me no experience in actual play, no practice, no getting a feel for the controls. And above all, they are boring as HELL. Natural Selection 2 did this, Star Conflict did this. NS2 really, really needs single-player tutorials of somekind because holy hell, you can not figure things out on the fly at all. "Oh man, I've got enough points to buy up to a Fade! These guys are so cool...huh, how do I activate Blink? Button's not working...oh shitshitshitshi--" *dead* "Oh sweet, the commander's chair is empty, let me just hop in and...this is waaay different, hug what do I do? Uh, oh god they're attacking the spawn, guys guys over here! Fuckfuckfuckfuck--" *dead*
There are games that can get away with it. TF2 had more than one class where "point and shoot" was a viable tactic. Heavy and pyro do accel in this regard (yes, there are subtleties, like not being a "W+M1 pyro" and doing basic spy checking, but even without you can make meaningful contributions). Medic is "find a guy, use medigun, wait for ubers" and you get popups whenever someone yells for medic that tells you how badly they're hurt. As you play you get a good view at how some of the other classes play. Experienced engineers will put dispensers and turrets in defendable locations, and you can easily emulate that, allowing yourself to try out a new class and "not be complete shite." Hell, playing as an Engineer and getting sapped by spies gives you insight on how to spycheck as a pyro.
NS2? You die too quickly and expend permanent resources trying out new things. And oh yeah, one of the hardest classes to play as an alien? The only one that's free.