To search any of the EVC Library databases from a computer off-campus, all you need to do is enter your NAME followed by your 7-digit STUDENT ID at the authentication screen. You can find your student ID on your ID card, using MyWeb, or on your school transcript.
For a brief overview of the major characteristics that are used to distinguish these two types of publications, see this online guide from the Chapman University Libraries.
For more on the peer-review process, see this page from the Lloyd Sealy Library.
You can also refer to the EVC Library handout available at the library reference desk. (Also available as a downloadable PDF.)