Zotero is a free, open-source program that allows users to:
Zotero is a powerful tool, and could potentially save hours many hours of work manually managing and creating references. It is recommended that Zotero only be used once you have a solid understanding of your school's referencing style (APA or IEEE).
Head to zotero.org to download the program, web connector, and review more documentation.
Make sure you're using the best, most recent, referencing style for your school.
Download your style from the Zotero Style Repository:
Remember, these styles are only mostly correct. Their outputs in your word processor will need to be reviewed. You are ultimately responsible for your work - you cannot blame Zotero if your references are incorrect.