Most scholarships are available the start of your senior year. Remember you should never pay to get help with scholarships. Local scholarships are posted on SchooLinks. SchooLinks also has a national college search. Also make sure you applications are completed, all directions followed and submitted by the deadline.
Make sure you apply for scholarships offered by the colleges that you applied to. Many offer merit based, departmental, athletic and additional scholarships. Search "scholarships" on the college website.
Research additional scholarship opportunities through your parents employer, you church, and your local community.
Some great scholarship websites
College Board Big Future-This scholarship starts December of your junior year.