Intoducing myself in Chinese

Ni men hao(你们好). Wo jiao Maria.（我叫玛利亚） Wo shi daxue de xuesheng.（我是大学生）
OK!right!
P.S.This is the only thing that I know in Chinese lol :))

Nimen hao. Wo jiao Maria. Wo shi daxue de xuesheng. 

原文：你们好。我叫Maria。我是大学的学生。

修改：大家好。我叫Maria。我是大学生。

We don't often use"你们好"."大学生"is"大学的学生".

It's better to write in characters.Because not all Chinese can read pinyin.And different characters may have same pinyin.

If your computer can show characters,you don't need to install Chinese characters.You need to install Chinese input methord.If your computer system is Windows,you can install sougoupinyin(You can download here http://pinyin.sogou.com/?s=alading).If your computer system is Linux,you can add Chinese input methord in i-bus.