A great way to make a difference on your campus by spreading the ideas of individual rights, limited government, and free markets is to tutor. Plus, you can occasionally make a little bit of money.
Depending on the subject matter, you will be discussing a variety of ideas, key thinkers, and theories. As anyone who has tutored knows, there are almost always opportunities to expand upon a topic. It is in those moments that you can introduce students to books and ideas that they might not hear about in class. You could even introduce them to Intellectual Takeout.
Tutoring is handled differently from campus to campus. There may be an official tutoring program run through the school administration, through individual departments, or it may be handled privately. You will want to explore the opportunities available to you on your campus.
You may also want to check out the many online tutoring communities. Depending on your subject interests and expertise, you will be paired up with students seeking help in those areas.