I am interested in finding information about a competitor and I am curious if anyone knows of any good resources for this type of thing.
Information I'd like to know:
Is this type of information typically available to the public? If so, where can I find it?
For a publicly traded company this information is often available in their regulatory reporting documents. In the United States this is their required SEC filings.
This information is very difficult to get for a private company. For a private company you will need to be a great detective. As such you will be souraging multiple sources of information and putting the picture together from a variety of puzzle pieces. These will include:
Have fun being a sluth-- and make sure that you are only spending the time that you really need to in order to stay focused on growing your company.
If the information you seek isn't publicly available, consider applying for a job with them. Not entirely ethical perhaps, but HR is likely to share a great deal of information.