You may want to pick up a copy of the 2010 edition of the book “Writer’s Market” (it’s also available at most libraries). It inlucdes a glossary of writing/publishing terms, as well as detailed listings for thousands of publications, agents, publishers, etc.
As for “having nothing to offer” by way of published “clips” (i.e. samples of articles, stories, etc. that you have had published), every successful writer started in the same exact position, so don’t be discouraged. Hang around the Forums here, continually improve your skills, and actively submit your work for publication; if you keep at it and really apply yourself, it will happen.