bolivianbaby;4517218; said:Stock slowly. Monitor your water quality. Live rock is a definite must! Lots of good deals can probably be found on Craigslist in your area.
Keeping a close eye on your salinity is extremely important. Topping off evaporated water will help keep it stable.
I wouldn't say it's more difficult than freshwater. It's the same amount of work, just different types of work. Hardy species will help you gain confidence.
Go slowly in your stocking.
Live rock will also help your tank complete the nitrogen cycle. I used raw shrimp in pantyhose and live rock and my cycle completed within two weeks. Then I did a water change and introduced fish. I personally introduce one fish at a time, but that may be paranoia.
This on the other hand I give a +1. Solid advice.