Dreams: Writing

Listening to songs on YouTube I stumbled on a video where a some guys's played in their school's talent show.
(http://www.youtube.com/watch?v=mD9Tx2XTgnM) << link
They were good. After listening I opened the description bar, not expecting much but... I got attracted to the way Mark (they guy who posted the video) wrote.
 
        'None of us by any means think that this is amazing. We put this together with 2 band practices in a matter         of 2 or 3 weeks. I am fully aware that the drumming doesn't sound like Ulrich and isn't all that great. If you           would like to tell me that I suck like the 100 other people that have, I guess that's what comment boxes are         for. Regardless, we all did a decent job. And seriously, it's a high school talent show, not a Metallica cover           band. HATERS GON' HATE. It's funny to us when you say the drummer sucks; also, it's exceptionally                 funny when you tell us that your band is better, that he's playing everything wrong, and REALLY funny when         you post a drum cover of this song as a video reply and it sounds like you're hitting pots and pans with a            broken broomstick handle. 7 year old spelling and lots of swears is the icing on the cake. With that said,            troll away!

       Also, the whole cargo shorts thing wasn't planned, and we all realize now how goony it looks' 

There was an easy flow when I read this. I was think to myself "how can I write like this?"  
I do also realize that I don't know how to write/say things without sounding confusing.
 I think it's because I don't know how to sort my thoughts. My English teacher has told me to make a 'road map' before writing, but when I try to do that I don't get anywhere. 
I usually just write~~ which is something I learned from Bill, my summer school writing teacher last year. 
After that summer I think I write with some confidence to keep writing. (yay~)
I have't read much book's as I did in Elementary school and the beginning of Middle school... that might have dropped my vocabulary? o.o I don't know what I'm taking about anymore.. Ok! Thats it thanks for reading (: