Thank You all for responding to my message and the advice you've given me. I watched several videos on You Tube and I sorta understand what a DCC system can do for me. I have a couple more questions for this forum... I just purchased my first DCC engine .... a  Bachmann Spectrum Decapod (Bachmann Item # 81702). The original ad said it was DCC equipped  but upon receiving the item today I see it is DCC ready. What is the difference Do I have any DCC functions at all with this engine?
Thanks again to all who are trying to help this old dog learn new tricks... 

I have been into HO trains for over 50 years and the other day I bought my 1st DCC equipped engine (Bachmann Spectrum Decapod) and now I have questions. I assume it will run if I just hook up a transformer but if I wanted to use some of the DCC functions  I know I'm going to need more things. If I were to get a Bachmann complete DCC controller would that be all I would need to use some of the functions of a DCC set up or would I need to get additional items? All I'm looking for is something simple that makes my Christmas layout a little more interesting.  I know nothing at all about DCC. Too bad they didn't print a book "DCC FOR DUMMIES".