That sounds like a good idea:) What sort of anime cartoons did you watch and like?
I'm probably not the best to suggest any since I have only read one manga but I really enjoyed "Yotsuba":). It's kinda everyday life stuff but very funny. You can read it online here if you're interested: http://koiwai.biz/
Like I said I have not read any others, so I have no idea weather its a good one to start off with or not.:S If its not really your thing I've heard good things about the "Death Note" manga. Some one else will probably be able to give you a better idea:P