how can i straighten my hair??

What is your hair like? Is it coarse, curly, tightly curled, and would you want to wear it like you do now at any point? If you're looking for a permanent solution, a salon would be your best bet, where you could get, in essence, a "straight perm". Of course, as your hair grows in, it will resume it's former state. If you have wavey hair or hair that will straighten with an iron, a ceramic straightening tool and appropriate products (hair spray or creams/gels, etc.) will allow you to straighten it when you wish, and leave it "as is" when you want to go "natural".

u should use some products to straight yr hair, or foen stuff with the right brush, just a thought