The expedition for the foreign girl isn't going to be a limited time thing, is it? Or is there any word on that yet?
There's no indication that it's going to be a limited time event. The staff would mention it if that was the case, so we can treat this as a permanent feature that'll be put in for good. So I wouldn't worry in case you don't have the sub team ready in time. This is if you just want to get ahold of your first forgien kanmusu once it's out.
Uh.... can someone explain to me just what kind of game is this? i tried to watch the videos and the wiki but i'm still a bit confused....
As far as i can tell: you have to build your fleet of battleships (represented by girls) and go into missions to battle other fleets. Is this even remotely right?
Another thing: is this playable on a computer? I've read it's for mobiles.... and if yes, do i need something particular installed? (since my portable computer is aroud the age of Napoleon.....)
HMK explained it rather well on the most part it summarizes the basics of the game to a degree.
As for where it's playable?
You need a computer, it's not available for mobile devices since the game is constructed mainly in flash. So if anything you just need your flash updated to your computer.
And as for your final question regarding the Lottery.
Use the wikia and look through
How to register to understand the basics of what you need to partake in the lottery. Also check the
Kancolle Staff's Twitter to know when you need to present for the lottery. Keep in mind times are set on Japan Standard Time, so in cases like this, know what time the lottery is being held and prepare for it.
Also keep in mind it may take several tries to make in through the lottery too. It took me 3 tries before I was successful.