Through the PSU Co-op office. Do an internship or co-op.
Employers really look highly upon major-related work experience.
Strong technical knowledge is important, but work experience is also very importance. I highly recommend to have a co-op or internship. Also, running tests on a new prototype of a calorimeter developed by DOW personel and making suggestions for improvements. I was interested in Math and Chemistry in High School so my parents suggested that I try it. Freshman year is the most influential one of all your college years so develop good study habits early so that they may stay with you.