If you are a PhD student or even a master student or you are writing a report, the chances are that you will have a literature review task. Even when writing a paper, you need a bit of literature review to be able to write a good introduction section. This involves doing a search in titles, keywords and abstracts and maybe some notes in a bunch of papers and books. General online search engines are not the best choices here. You also don't have that much time to open each file one by one and do a search in each of them separately. Here is that Zotero, a free software, can help you. It also help you in organizing your search results. After filtering your literature sources and ending up with a few chosen ones, then you can spend your time on reading the selected items. And finally you need to do the citation in your written report, don't you? Zotero also can automatically generate bibtex file for you (of course you have to manually clean it afterwards ^_^).

In this video we briefly go through these, what literature review is, how to install Zotero, and finally how to use Zotero.

Zotero's homepage where you can download it as well:
https://www.zotero.org