Bill,
I have run DCS and Legacy together for years now, Barry was nice enough to advise/teach me about DCS even before his 1st book was written. I highly recommend his DCS O Gauge Companion Book, it saves both the beginner and the experienced from making mistakes, and eliminates a big learning curve.
As experience as I am with building DCS/Legacy layouts I still reference Barry's Book all the time when building my layouts.
PCRR/Dave
Our New DCS/Legacy Shelf Ceiling Layout along with our Donovan's Reef Bar Top Layout under construction.
The DCS O Gauge Companion - Top shelf education for DCS/Legacy layouts!