thank you very much Nam & Jim!
Nam, i study computer science. and about plants... i go for the easy ones to maintain, i must admit. no flowers. flowers die on me. ivy, cactuses... ivy specially. tring to posh up my witchy home. =).
it's more about feeding them than watering them. i make my own dirt with vegetable leftovers and dead pigeons and stuff. add lots of water, cover it with something, let it rot. add a couple spoons to your plants and they'll really like it. =)