Citation managers are tools to help you collect, organize, cite, and share your research sources.
They allow you to:
create an organization system
makes notes and highlight
and use the plugin to create references in applications like Word.
Choosing a citation manager is a matter of personal choice. Research can easily be imported from one citation manager to the next, so you can easily switch if you find one you like better. There are free and paid citation managers, and for general research, a free platform will provide all the tools you need.
Adobe Reader is a free application that allows users to view, print, sign, and annotate PDF's. This simple, but powerful, tool is great for highlighting text.
There are lot of great organizational apps on the market. Many are free, or provide free trials. Some are text based, while others organize information into visual graphics. Below are just a few to get you started.