Many undergraduate classes are taught entirely by professors in lecture-discussion format. In other courses, you'll have lectures from a professor and a discussion section led by a teaching assistant. Some introductory-level courses are taught by teaching assistants under the supervision of faculty members. Typical course load is 13-16 sh. That depends on your major.
Every student is required to take rhetoric.
It's wise to fulfill your General Education Program requirements early. And your major may have a required sequence of courses that has to start in the first year. Your academic adviser will help you with your course selection. The Business and Liberal Arts Placement Office, as well as placement offices in the other colleges, are devoted to helping students land that first job. I took courses at another college while I was in high school.