My Library is located in the left column
Clicking the button above the left column creates a new collection (a folder created and titled for your easy reference)
Use these screencasts to understand how to manage your research citations:
Collections: Folders and sub-folders
Tags: Add searchable keywords, status, anything useful to you
Using notes effectively: Add fully searchable notes, quotes, etc.
Sorting Items: Display by date, author, title or other criteria in records.
Basic Search for items in My Library
Using a Timeline