I think that if you want to take TNCC even though you are not working in an ED at this time then you should go for it. It is a great course and not to mention a good cert to have under your belt. It is good for 4 years. It looks good on a resume if you would ever need it. Plus, as others have said, it is good knowledge to have in your professional career and everyday life as well.......It will not be a waste of your time, or money to do it..