This is the most labor-intensive way to enter references into EndNote Basic, and it is the most prone to errors. Avoid using it if possible.
This 5-minute tutorial will show you how to enter references into your EndNote Basic library.
Search external databases from within EndNote Basic. For topic searches, searching PubMed via the PubMed website is recommended. Search options from within EndNote Basic are limited.
You can attach a PDF (or other file) to a reference in EndNote Basic.