sometimes people ask questions on forums that they could usually find an answer to if they weren't lazy and just did a bit of thinking or research themselves. stupid example...on a car forum i visit, someone asked once "if i pick up a car that is 1000 miles away and drive it home, how much will i pay in gas?" well lazy, at X mpg and $3.00 for a gallon of gas, figure it out yourself!
anyway, i'm not trying to get on your case, but my point is, it sounds like you need to a lot more research on what is necessary for setting up a tank and what you want to keep in it. as you learn more about the hobby you will get a better feeling yourself for the time it will take. i would recommend to any newbie getting into this hobby specifically, to do a lot of research and learning before you start a tank, because things can go wrong pretty quickly if you dont know what you're doing. i think i visited this forum for nearly two years before i started my first tank.