The most popular grant for students who demonstrate financial need is the Pell Grant. This covers tuition, books and living expenses. It does not have to be paid back and is income based. It is also a prerequisite for many other grants or scholarships you may apply for. (See Resources.)
P.E.O (Philanthropic Educational Organization) has chapters all over America and Canada and exists to help women further their educations. They help women who have been out of school or whose schooling was interrupted. Look online to find your local chapter (see Resources for link).
You might try the Women's Associations in your community. Some communities have Women's Resource Centers. Your local Chamber of Commerce will most likely have a list you can work from.
Talk to the financial aid officer at your school. She will have a list of available grants or scholarships and be able to tell you which ones you qualify for.
Just keep your eyes open and you will find the help you need. Scan the bulletin boards at your local library, read the paper every day, and look online.
Sometimes peripheral information is needed when applying for a grant. This can include: transcripts, financial information, letters of recommendation, an essay, a letter of explanation, and a minimum GPA. Gather all of your information, make copies and keep it handy. Education is worthwhile at any age and help is out there to assist you in meeting your goals.