Each colleges and university offers their own scholarships for academics, departmental, or even extracurricular purposes.
Scholarship search websites There are many websites out there that allow you to create a profile and then you can search for scholarships that you meet the criteria for. Some will even send you emails when a scholarship shows up that you qualify for. Once you have found a scholarship, you will need to apply. Here is a page with some videos with tips for successfully completing those applications. https://www.fastweb.com/content/scholarship-videos