A few ways to find a new job (as a recent grad and with no experience).
1: Use online websites. There are plenty of sites where you can post your resume to a profile. Employers have job listings they post with keywords and you will be notified if you match any of those. You can apply through the site and hope for the best. I've used LinkedIn but there are many others.
2: Use your school. Most school have advisers that can help you find opportunities through alumni or other contacts. My school has a job fair every fall and spring where companies come and set-up to look for new-grads to hire. See if your school has either of those resources.
3: Use your connections. I have my current position due to a friend who graduated before me. He left behind an internship that I was qualified for and highly recommended me. Having a connection is a great way to get a job, even if they want some experience. Being recommended by someone who knows the job and that has a good reputation in a company can go far.
Also, find a part-time job elsewhere even if it's not in your major. Having work on your resume is better than nothing, even if it's not in your major. You can still get experience and find ways to apply what you've studied to your job and use that experience in interviews.
All of these are personal experience. I don't graduate for another couple of months but I have already found a few options myself. The expectation is that they won't all pan out, but you just have to find one that does and go from there. Just remember that the chances of a job just falling into your lap aren't very high. You have to go out and find it!