Mendeley is a reference manager that allows you to create a personal database of references related to your research, access or upload data, and insert citations into Word using any one of thousands of citation styles. If you are collaborating with other researchers, Mendeley allows you to share references.
Mendeley users can still sign up for a free account, which offers 2GB of web space and the ability to create 5 private groups with up to 25 members, or can upgrade to a premium plan to access more space or groups. This guide shares how to sign up for the free edition.
Mendeley's YouTube account has short tutorials and videos available for troubleshooting issues or problems.