Some of the large courses break into small discussion sections once a week. Summer courses are usually quite a bit smaller. Before you schedule your courses, you can look at the Penn State Registrar's Home Page . This page has a section on courses that lists the enrollment limit for every course. You probably won't be able to take everything you want in smaller sections, but you can use this information to choose a mix of larger and smaller class sizes each semester.
Undergraduates are always welcome at talks by visiting psychologists.
Finally, if you have good grades and are really interested in Psychology, find out about joining the Penn State chapter of Psi Chi, the national honor society for psychology. Your best starting point is your professor, or the teaching assistant if the course has one. The University Learning Resource Center in Boucke Building offers a variety of assistance services, including help with writing. They offer tutoring sessions for some courses, but usually the only course relevant to Psychology majors for which specific tutoring is available is STAT 200. Your starting point is the Psychology Advising Center in 130 Moore Building.