Bibliographic management tools organize your citations, PDF documents and also help format the citations in the style you choose. I or any reference librarian can help with these.
There are several and varied options for keeping track of your research. Many people find text documents or handwritten notes meet their needs. Below are some other options for managing your research. Find something that works for you and fits into how you work.
PDF Readers that let you annotate and take notes. See table below for comparison
Nothing's worse than copying down a URL incorrectly, or putting a bunch of web sites into one browser's bookmarks and then moving to another computer with no access to what you saved. These tools help you keep track of your work, especially when you use multiple lab computers.