In order to use the personalized features of Google Scholar, such as creating your Library, you'll need to create a free Google account. This account can be used across all Google products, including Gmail, YouTube, and Chrome.
Sign up here: Google Account
The My Library feature in Google Scholar allows you to save articles directly from the search results page, organize them by topic, and search the full-text from within your library. The citation information is editable, and you can easily export the citations to a citation manager like EndNote or Mendeley. If you use Google Scholar often, the My Library feature is a great way to keep track of important research and access it any time you're online.
To get started, sign in to Google Scholar
Perform your search. When you find an article you like, select the Save button below the citation. It will automatically add it to your library.
Organize your library by using Labels.
When you're in the My Library view in Google Scholar, you can search the full-text of articles within your library.
In addition to setting up your library, there are a few other personalizations you can make to Google Scholar.
Start by selecting the Settings button from the top of the GS screen.
More information about My Library can be found here: