Advice and Tips for a new friend

Hi all,

I am Italian and I am 26. I am planning to apply to LBS in 2016, for this reason I need to get an high gmat (700+).
The point is that I started to study the Quantitative section last week and I found many problems to solve questions (I got 0 correct answers on 10).
I presume that this disaster might be caused by my total ignorance in math.
So I am restarting to study math from the beginning (like if I was at the elementary).
Anyway, is there someone who had my same problem, but, despite it, got a very high gmat score?
Furthermore, do you have some tips for me? do you think might be useful for me to study math from the beginning or is better to attend a gmat course already now?

thanks to everybody who will answering me.
I am very upset about it because I think I won't never get a good gmat.