I'm reading tons of books sience I'm 11 years old. One of the books that brought me into reading one book after another was "The Three Musqueteers" by Alexandre Dumas. So here's a list of books and series I can recommend: 
    The Three Musqueteers by Alexandre Dumas
    The Count of Monte Christo by Alexandre Dumas
    Dune by Frank Herbert
    Battletech a serie by various authors
     and of course the best Science-Fiction Serie of the World: 
    Perry Rhodan
    If you understand German and want to know more:
    Mordor's Bücherseite