Step 1: Find the journal you would like to add.
Step 2: Press the button, shown in the picture below that reads "add to my bookshelf."

Step 3: The article will be automatically added to your bookshelf in the nearest location. To move the journal you will have to go back to your bookcase. For more information about moving journal articles in the web-based version see tab: Moving Journals On A Bookshelf.