Congrats on the MDS job. I have been doing MDS's for 7 years, MDS coordinator for 2 1/2 years. We have 2 MDS coordinators for our 135 bed facility, which makes the job much more tolerable. Days consist of meetings, chart reviews, CNA interviews about the residents, inputting information, care planning, etc, etc. I think some of the most challenging aspects are getting accurate info from the staff and coordinating medicare and therapy services. Aanac courses are a great idea. Good luck!