I have to say, this isn't an easy game, it is also quite time consuming (time literally flies when you are playing) but when you start winning it is highly rewarding (kinda the way Demon's Souls and Dark Souls are). It is made in order to make difficult for the player to prevent the history repeating over again (or going worse for the country you are playing with).
While instructions would be nice, the internet is vast and has quite a few explanations and tutorials.
Yeah, it's an old game, graphics are not impressive at all, but really, who cares? it's not the point of this game. Also as your processor doesn't work much, you can play quite a few hours on your laptop before running out of battery, which is nice.
I totally recommend it, it's worth every dollar and you get tons of hours of gameplay due to it's almost infinite replayability.
Only advice: don't get frustrated if you get your ♥♥♥ kicked several times, you'll learn more and more each time.