If you can try to answer the questions without spoiling the last 2 games that would help.
It's about some of the choices you need to make. I'm not sure if I should hook up with Liara or Ashley. How much of a role do they have in the second and third game? Also I don't know if I should save Kaidan or Ashley and how much it matters which one stays alive.
It doesn't matter who you romance. In ME2 & 3 you can either continue your previous romance or start a completely new one with someone else, so it wouldn't affect anything if you romance Liara or Ashley.
Also, it doesn't matter who you save. Though the only little spoiler I'll give is that Kaiden is A LOT better than Ashley in ME3 in terms of abilities and combat skills. I'd keep him alive if I were you. --- For the latest news on Final Fantasy Versus XIII with interviews, e-mails, etc. with the development staff, please visit: http://bit.ly/g917a5
Neither really do much in the second game, they both are important in the 3rd game. Though if you save Kaiden he takes Ashley's place for the sequels so it doesn't matter who you save. --- I am Mogar, God of Irony and The Devourer of Topics. http://i33.tinypic.com/2hwco6d.jpg