Go to Web of Science, click the EndNoteTM link and sign in. This route works well on or off campus but is recommended for the latter as it provides more linked data
Alternatively, sign in via http://www.myendnoteweb.com
After sychronisation press <F5> to ensure the display has refreshed before viewing the updated library
Any changes you make to your online library will be pulled down into your local library next time you sychronise
If you work on a document using your office computer and home computer, you could use EndNote Online to sync references between these two computers. For example, you have worked on a document and used EndNote at home today. You will continue to work on this document tomorrow in your office.