No matter how much you learn about enterprise computing, including mainframes, at college, university, or other educational opportunities, becoming a mainframer is a journey of learning that continues on, and depending on the type of mentoring and experience you have, there are likely things you need to know that you may not learn until years into your career, and no course will teach you. It's time for that to change, beginning with this session. Reg Harbeck and Steve Perva will discuss many things they learned "the hard way" in their careers, give insights and resources for such learning, and open the floor for discussion and possibly even spontaneous mentorship.