Good enough, I will start lightly on topics that the grammar and spelling people won't jump at, then.
(Mainly because I don't want to criticise you on something I could do worse myself.)
My name is Jacob I'm thirteen about six feet tall and thin. I have brown hair and eyes to match. I woke up it was Friday and my three brothers were going snowboarding. Cody was eighteen Mikey was seventeen and Brandon was twelve. We said are goodbyes and they left.
While this does act like a good introduction, I think you ought to part it up a bit more. First the introduction to the narrator, the part about his looks, preferably more on that to add to people's imaginations (if you have to do it, you need to do it right, eh).
Might also be more vague on the height, when the other descriptions are vague: I am thirteen years old, and tall for my age.
After that, you can start a new paragraph on what happened that morning. Him waking up, the brothers. Remember, what you mention either needs to lend itself to description or the story. It has to be somewhat important.
In this case, why would the brothers' ages be important, while they are given no further description?
APOCALYPSE, THE CHRISTIANS PREDICTED IT AND NOW THEY ARE GONE LISTS OF CASUALTIES WILL APPEAR AT TEN THIRTY A.M
It is bad practice to use all caps in a text like this. It disrupts the flow of the text and doesn't look particularly well.
Perhaps instead, you might be looking for:
A news warning popped up, stating in big, capital letters 'Apocalypse: The Christians predicted it[and so on]'
or
The scrolling banner with news caught my eye with its bold, larger than normal lettering: '[stuff]'.
Last thing for now will be that you probably ought to split up the dialogue into different lines. That way it is easier to read, understand who is talking, and you might be able to add on description and further dialogue:
Her little brother picked up the phone crying "Who is this." "Its me," I said. "Mom's gone," he replied still sobbing. "calm down is Sarah there,"
It was her little brother that picked up the phone. "Who is this?" He asked. I could hear he was crying.
"It's me." I said.
"Mom's gone." He said, still sobbing.
I hesitated, but had no real reply to this information. "Try and calm down." I paused for a moment more, before adding: "Everything will be alright. Is Sarah there?"
And so on, blahblahblah, all that.
It's an interesting concept, though, though I am unsure where you are coming from on this. Also good luck with that first person narrator. I have never had any real luck with it, but it usually works well for the people that are able to use it.
