Glad you wrote back and glad you asked. I had intended to add just such a link to my previous post, but just like you, I'm sleep deprived, too.
For future reference, the following FindLaw.com webpage is an excellent starting point to bookmark, and a primary go-to reference source on anything about the constitution or law. At the top of the page, it links you to the U.S. Constitution, including text and annotations, (which are short synopsis of background, history, major issues, case law, etc.). This same page also links you to the U.S. code, so you can quickly look up things like FISA, Patriot Act, etc. Here it is...
FindLaw Constitution, Cases and U.S. Code
This next link will take you to the Fourth Amendment, text and annotations.
FindLaw U.S. Constitution Fourth Amendment
When you bring the above page up, note the links to the annotations below the text. For your purposes, the first link outlines the meat of the history and major issues involved and would be a good starting point. It is also the most direct response in answer to your request for a research link on the 4th Amendment. I don't know whether to characterize the webpage as "short", or just an easy read, but I think you'll enjoy it. Try some of the links within the annotation webpage or some of the other links to 4th Amendment annotations (there are six pages, total).
BTW, these annotations are taken from a highly acclaimed series written by the lawyers and historians at the Congressional Research Service and have been reproduced in several civics texts as well as numerous websites. But the FindLaw.com version is best because they enhanced the original with copious links to other documents and well as the actual cases.
Thank you. I really appreciate this info.