Going lighter is usually best done by professionals.
You can do highlights so your hair appears lighter, or do an all over permanent hair color that will lighten your hair. Hair can turn red, or not come out at all what you hoped for when going from very very dark to lighter, so if you try to do it yourself, just be prepared that you might have to pay to get it fixed. It might work out fine doing it yourself, which would be great.
You can call Miss Clarol help line if you’re in America and ask for advice, which product in their line they recommend.