The Online Search function will allow you to connect to and search online databases without leaving Endnote. To get to Online Search, first click Collect from the top menu, then click Online Search.
To add a new reference by hand (manually), click Collect in the top menu and then click New Reference. You will be taken to a blank bibliographic record which you can fill out for your source. Note the Reference Type dropdown menu at the top of the record--selecting different reference types from this list will cause different types of fields to appear in the rest of the form. If you are not sure what type of reference you have or do not wish to specify a type, you can choose the "Generic" option from the dropdown menu. When you are finished entering information about your source, click Save either at the top or the bottom of the page.
Note: The Save button does not appear until you have typed in at least one of the fields on the form, so do not worry if you don't see it at first.