I really don't mean to be rude, but you should work on your grammar and punctuation first. Being able to express yourself clearly is essential to any learning endeavor.
There is no "first" about that. Expressing yourself clearly and precisely is something that comes with math. Yes, it's a useful skill, but there's no need to think of doing it first.
So, with respect, while it's true that the OP will need to learn how to write more clearly, I think you are wrong.
We can nitpick about "first" or "!first", but the central point stands: the way OP writes makes him sound dumb, which is a shame as he's most likely bright.
That doesn't make the question less [or more] intellectually interesting. It doesn't excuse anyone's behavior beyond flags, downvotes, and the range of constructive behavior bounded by HN guidelines.
Then perhaps just as valid is to say that you seriously need to work on how you express yourself. It's true that the OP writes in a way that is more closely matched to the way people speak, rather than the way people are usually expected to write, but the way you are saying it is simply rude, non-constructive, and unhelpful.
I beg to differ. It may not be enjoyable for OP to hear my criticism, but I insist that it is productive. You can't expect to go far in the professional world writing like that.
Again, I suspect OP is a bright guy (especially since he's trying to learn on his own!), but the way he writes does him a huge disservice.
The criticism was unsolicited. It was off topic and mean.
There are many places on the internet where that type participation is the most intellectually interesting activity that occurs. Hacker News is what it is because it isn't one of them.
So, with respect, while it's true that the OP will need to learn how to write more clearly, I think you are wrong.