Information technology has been one of the most volatile -- and potentially profitable -- industries worldwide. Because of these two factors, getting reliable information on the information technology business is extremely critical for business owners, investors or anyone thinking of starting an IT-based business or partnership. And there's no shortage of information sources about information technology and business. There are hundreds of magazines devoted to IT, software and/or hardware. Leading business information sources like Dun and Bradstreet and Standard and Poor's cover IT and tech companies. You can also easily find analyst services like Forrester or Jupiter, which specifically cover the tech industry. And if you're looking for free, regularly updated information on the information technology business, you can build yourself a constantly updated library with the right business blogs with RSS feeds.