I strongly urge all students (undergraduates & graduates) to pick a citation management system and learn how to use it. There are various kinds of citation database applications. Some are resident on your machine (like Endnote) while others are web-based (e.g. Refworks). Many, including Zotero, have both desktop and web-based options. Some you pay for, others are free. Wikipedia has a good comparison page here.
The point of these applications is that you can build (and share) lists of references and scholarly sources and they significantly ease the burden of building a bibliography. I started many years ago entering all my reprints (yes, they were paper reprints) into Endnote. I used it mainly to organize and index which manilla folder each reprint was in. In grad school, I used it to build bibliographies for papers and publications and ultimately my dissertation. With each new writing project, I added the new references to my database of sources. Subsequent bibliographies were easier to build since I only need to copy and paste references I had already entered into a new bibliography file and add any new sources I was citing.
Since coming to UNF, I’ve switched to Zotero and it has become my go-to citation management. Here is a good tutorial on Zotero. What I like is that Zotero is (1) free, (2) web-based so it’s always available on any machine I”m using (3) there’s an iPad app for it, (4) it has a wonderful system for adding citations that I might encounter on JSTOR or other online journal article repositories, (5) it has a plethora of citation styles, and (6) it’s darn easy to use once you get used to it. I no longer am adding to my paper reprints file, but I have an ever growing electronic library of PDFs. And many of these are included in my references database.
A recent expereince has reminded me how useful Zotero (and other citation systems) can be. An editor of a volume that I’m contributing a chapter to asked me to re-do my bibliography in the style required by the publisher. What could have been a full day of painful formatting was (with Zotero’s help) a 20 minute job….and that included finding and installing the publisher’s required citation style from Zotero’s repository of styles. Long gone are the days of building a bibliography by hand and all the pain that that involved.