First notebook entry: Introducing myself

My name is Huangfan . My english name is Fred.
I come from China. I want to go to Top 50 universities in the United States .
Thatl's why i want to learn English .
I really want to english well.

Alright, there aren't a lot of mistakes :)...just basic ones.

My name is Huangfan. My english name is Fred.
I come from China and I want to go to one of the Top 50 universities in the United States. That's why i want to learn English. I really want to understand English well.

For the last sentence you also could have said simply, "I really want to understand English." or "I really want to know English."

Hope this helps :)