Marine Tank Basics?

[lrhodes]

I think I want to start a salt water tank... But I don't know where to start. I will probably use a 29 gallon that I have as like a larger nano tank. Is that ok? I need to first know the basics. Give me the 101 on marine tanks.

 

[Donya]

See these as a starting point if you haven't already looked at them.
Marine FAQ 
Common marine hardware