If you can offer something unique, that no other website has, then you will have original content for your website. You can start to achieve this by looking up information that would be of interest to your "target" or "niche" market. Start by looking for unanswered questions, and then try to answer those questions. Sometimes it can take a lot of time and research to come up with a solution, but when you do find a solution, what once seemed like non-existent information, is now easily found on your website.
Just because you have figured out a solution, that does not mean that the solution didn't exist at all, usually it just isn't readily available on the net. It could be that the information is being taught in seminars for very absorbent costs. If you can develop an ebook, or something of the like, you could be giving people the exact same valuable information for a fraction of what those big seminar places are charging for that information. This is just one valuable technique that my mentors have taught me about.
Also, if you find more valuable information on the same subject, you can always just add to your product, or ebook, and then re-release it as a second addition. This can make you even more money. Usually, the people who origianally bought the first version, will make comments, or ask questions, so all you have got to do is give them what they want, and then resell it to them.
It isn't hard to come up with new ideas, or seemingly unavailable information, you just need to keep your "niche" or "target" market in mind when trying to find a new topic of interest. You will need to ask yourself a lot of questions, and notice if any of these questions go unanswered.
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