Originally Posted by kerry

It's a pretty easy job. I done 4 or 5 over the years. Around here the lines from the tank to the hot and cold pipes usually have a section of flexible copper pipe with threaded fittings. Might not be able to use flex gas lines depending on your jurisdiction. Denver requires solid lines. Cross the city line to Aurora and flex lines are required.
The drip might be condensation depending on the conditions.