Digitrax publishes The Big book of DCC, or something close to that title. If you are familiar with block wiring, you are basically all set, just connect output of DCC unit in place of one existing power pack and throw all switches for that supply. If starting from scratch, same basic rules apply. You just won't need as many blocks. Blocks will be for troubleshooting only, not for every spot you would want to be able to leave a loco sitting. If the railroad is small, it could be one block. Then all you need to do is run one pair of feeds from DCC unit to track and you're done. (Turnouts may require attention, but same with DC) One thing to keep in mind is the amperage of DCC is higher than Dc power packs. 5 amp is typical. More current requires larger wire sizes. 14 gauge is good to use for buss wire, 20 gauge for feeders to track. Hope this helps, Gary