You won't be making money very quickly from a website, it's like a business. It takes time and lots of patience and you need to invest money to see returns.
The first you should do is research: What do people want? Here's a few websites where you can find some answers: - http://answers.yahoo.com/: Free to use and join. You can use this site to discover what kind of information people are looking for. - http://www.43things.com/: is a site where people list the things that they want to achieve, their goals and desires. Meaning, this is another good site for discovering what members of the site need or want. - http://freekeywords.wordtracker.com/: Check if people are searching for your topic/keywords or find keywords. - Go to http://www.clickbank.com marketplace and sign up as an affiliate. Search for the products/service you wanna promote and look for a gravity figure of less than 100 points. Check the sales page of each product shown (from the "view pitch page" link) to find the sales page that looks best to you. Build your sales page around the info you have gathered, and feel free to start with for instance a squidoo-page.
get a general sounding domain and do google trends, changing the offers daily/ weekly. That seems to work best for newbies
Do you have a certain passion? Something that is really interesting to you? Creating a website, just like creating a blog it is essential you pick something that you can see yourself still wanting to talk about, or be learning about a year or five years from now. Those who create a blog or website in search of the get rich make it big attitude often fizzle out after the first month or two when the expectations they have are not met by reality. The reality is that anything you do takes some effort. Even those people that have created sites that have made a lot of money put a lot of hours in creating the idea, finding something they were interested in, and marketing the heck out of it both on and off the Internet.
No sites will gain huge profits instantly.. Go for a topic that you know well, something that you enjoy and have good knowledge in.
Do what you like to the best of your interest. Doing something which you have much knowledges and experiences will make it much easier for you to buildup a website/blog. Making quick money will end fast.
Are you looking for a niche or a script? Niche-wise, it's always good to focus on a hobby so you can talk about it. Script-wise, Joomla or Wordpress are good if you're just getting started.
Well you make traveling or tourism site because nowadays plenty of visitors love to travel for vacation abroad.