Ventajas
You are interviewed by two people (I believe one full-time housing emloyee and one student employee). If selected you proceed to the next stage and and take a course. They discuss various topics such as leadership, effectively assisting students, etc. From there they will decided if you will become a student housing employee. You don's have to be particularly outgoing, but definitely speak up and show ( in a non- overbearing and non-hyper competitive way that you want the job).
Desventajas
Some of the people chosen later become slackers or are lame RAs that don't really do much. They are more about the free stipend and housing benefits. I wish they had an easier way of weeding them out. However, don't be turned off by this. People like this exist everywhere. Apply!!