The learning curve on how to become a Teaching Assistant (TA) can be rather steep. In this paper, the authors explore three areas they wish they were advised in prior to beginning their teaching careers. The lessons are centered on balancing expectations and responsibilities in the following areas: 1) prioritizing their own work and research over teaching and vice versa, 2) the dual role of instructor and mentor, and 3) adapting prepared lesson plans when unexpected circumstances arise. The authors are three doctoral students in political science with approximately three years of teaching experience each. As such, they offer a unique perspective: each are settled into their position as TA but remember the challenges they faced while on the path to this role.