One thing you may want to do before starting a business is consult with business advisors. You can find business advisors that donate their time on StartUpNation.com. There is a whole community there to help you get started and once you find people who are trustworthy you can run your ideas by them.
Most profitable businesses have certain things in common with each other. The majority of them target a large population of people. Most sell a good or service that is actively wanted.
You should start collecting information on the markets you are interested in serving before you get started. With the help of the internet you should be able to easily collect data from forums and websites like Yahoo Answers. Once you have a good amount of data you can survey whether or not your ideas are profitable ones.
It is wise to collect potential customer data while you are doing your research. One way to do this is by offering something for free in return. You can later use this data to advertise to the customers.
Another idea to get started is to find your competitors and see how well they are selling. If you can get a hold of some of the customers of your competitor you can get all sorts of information. You will want to ask them if they are happy with many different aspects of your competitor, such as their customer service, their pricing, their quality, etc.
Use this information down the road when you launch your business, and you will have something to start with in terms of a customer base.
If your idea is for the online world you can easily collect data and information on several websites with the help of polls and surveys. This is a lot easier than doing market research offline.
However if you home business ideas revolve around the off line world you should collect data. You would probably find the best information on this topic by checking on the Start Up Nation website community.
If you have some really good profitable business ideas you might be able to get angel investors to help you get started. You can apply online for these investors but you should have a good business plan in place. You should ensure that you do a much market research as possible and create some sort of business plan. Once you are able to show this much work to your potential investors your idea and you, will look much better and you will have a better chance of getting funding. The most important thing is to do the grunt work for your potential profitable business ideas and you will be on your way.