There are actually publications out there that will assist students in researching all the available grants and scholarships available. And they are very thick publications!! Check out Amazon for some of the better quality ones, or even better, if you have access to a local library, they often will have the latest versions in the reference section. Start early as many of those associated with organizations, associations, professional groups, etc. require essays and interviews along with applications and transcripts. There are also online sites like scholarships.com or studentscholarships.com that enable you to do searches. I remember a friend of my son received a scholarship from an association that existed with people who had a specific first name.
Check out the availability of scholarships at the institutions you attend. Some are not available freshman year, but each department or school within the college or university often has grants or scholarships that are part of endowments, for students pursing a particular course of study or available to those willing to commit to a program. Some can be small, $500, but those can add up if you are able to receive more than one.