I wouldn't suggest anyone starting off on SW to use a 10 gallon. The smallest I'd go for a newbie tank is 20 or 30, the bigger the better. The larger water volume in the bigger tanks allow for more errors, while still hopefully keeping your fish alive. The most important thing to remember when stocking a saltwater tank is that the one inch per gallon rule DOES NOT APPLY with saltwater. Go to a LFS you trust that has a large selection of saltwater gear and fish/corals/anemones; I've found that the more saltwater fish one offers, the better equipt with knowledge they are. Ask them for a good book on how a beginner can start a tank, and work from there. Most importantly, and the biggest difference from freshwater in my opinion, saltwater tanks just take more patience and time. Also, search this site for topics related to yours, there are literally dozens of them.