It depends. If someone is promising you $1000 per day, then I would treat it with suspicion. On the other hand if a website offers you step by step information on how to set up your own business then you can probably trust it. The rule of thumb I follow is that if I am being promised a fantasy then I will ignore the website. As with anything in life, you have to work to make money whether online or offline. It's just that some people rip of others online by promising them "get rick quick schemes."

So all in all, try to find websites which provide you free information on setting up a home business. There are plenty and I do not think you need to ever pay for this information. Setting up a home business has become common knowledge but using tactics to drive traffic and convert visitors into customers is where the real meat lies. If some one is asking you to pay how to learn these tactics then you should pay. But I personally would never buy an ebook or book promising me to "Set up" a business online as that information has become common on websites and forums. Hope that helps!