I bought my son the Pacific Flyer Ho scale train set.  I have so many questions.  First, What is the difference between DC and DCC.  He wants to buy a turntable and is looking at the Bachman HO 46299 Motorized Turntable, DCC-Ready.  Also, does it have to have its own power, or will the power that come with the pacific flyer (item number 46605A) work with the turntable also.  I guess I will just start with that for now.  Thanks for any help you can give me.