Apply for the federal Pell Grant first. The amount you qualify for will be determined by your income. The maximum amount has recently been increased, and it covers tuition and books. Any surplus may be used for living expenses. You can apply online.
The Philanthropic Educational Organization (PEO) was founded and funded by women to help others reach their educational goals. You must be within two years of graduating, so be sure you're watching the deadlines.
Jeannette Rankin was the first woman elected to Congress, and she strove to make higher learning possible for low-income women. Scholarship applications are taken between November and January.
Ask the financial aid officer at your school if she knows of scholarships you may qualify for. There is probably a list of available scholarships posted at your school.
Keep your eyes open for local scholarship opportunities. Call civic associations and clubs in your community. Look on the bulletin board at your local library. Peruse your daily paper for listings.