Ok, I am turning 14 years of age this November, and ever since I was like 10 I have been into writing. Whenever I get a book, I just... cant stop reading it, I really love reading books. And I love writing them too, I've began writing so many different books, but ended up unhappy and thought of a different idea for a different book. I know I'm very young to be a writer, but I have a talent for it, so can everyone please give me tips? Websites that can help... anything 
Favorite books I've read:
Harry Potter series (read 4 times).
Deltora Quest series (read 2 times).
Artemis Fowl (read a few of those books).
Dawn of Empire (a very good book, more of an adult type book, but I loved it).
I am currently reading the Twilight books, and I LOVE them. Even though I like more action books and movies with blood and gore and horror, and I've never liked romantic movies, I really like Twilight, these books are soon to be my favorite books ever
Well can someone please give me some help on writing
Thank you all who answer.

Favorite books I've read:
Harry Potter series (read 4 times).
Deltora Quest series (read 2 times).
Artemis Fowl (read a few of those books).
Dawn of Empire (a very good book, more of an adult type book, but I loved it).
I am currently reading the Twilight books, and I LOVE them. Even though I like more action books and movies with blood and gore and horror, and I've never liked romantic movies, I really like Twilight, these books are soon to be my favorite books ever

Well can someone please give me some help on writing

Thank you all who answer.