Get hands-on experience so you learn how to apply knowledge and can demonstrate what you bring to an organization.
Be focused. Be focused in your job search! Start researching your freshman year about the kinds of companies and attributes you want or need. It’ can’t be an afterthought your senior year. You can’t decide all of a sudden, “Hey, I’m graduating; I need a job!” It’s a process, and it’s extremely competitive. For you to gain experience and be able to demonstrate the attributes employers are looking for, it’s too late to do it if you wait until your senior year.
Treat every interaction as an interview. Network well, but efficiently. Make sure you understand what is happening in the markets so that you can take a position on an issue.