Writing Mentors Forum just new

Hello , my name is Fay Zodiac will Duh 
i am 18 and i love to write i write what ever comes to my mind having English as a second language is not bad at all at the moment i am having thoughts of writing a book I don't know how it will turn out since it is my first but as they say there is a first time for every thing would love some advice on it my weakest  point is punctuation because when i write i forget every thing and become taking by the words  
I am new here so don't be gentle and tell me when i go wrong thanks =)