Please suggest be a book for PSAT?

HEY guys...., im really dumb at maths and sice i am not a native English speaker i don't have a good vocab !! . well ill be giving my PSAT exam in coming school year .. and ull know how important isPSAT a for better collage. i want to start ahead. PLEASE SUGGEST ME A BOOK THAT WOULD BE BEST FOR ME...!! Please !!!!