I think Comm299 saved me a lot of effort in actually going to interview experiencing the shame of saying something wrong or unprofessional.
The other important lesson is that the job market is constantly changing, and 299 saved me a lot of time in researching for the current trend of the job market, i.e. what employees are looking for in terms of personal traits, and quality/value. It also allowed me to be updated with the latest career tool that is available to me in school.