Start by clicking on the "Databases" tab on the Heterick Library homepage (indicated by the yellow outline in the screenshot below).
On the page that appears, select the first letter of the name of the database you are looking for. The letters are listed across the top of the database list (indicated by the yellow box in the screenshot below). For example, if you are looking for Web of Science, select "W."
Scroll down in the list until you see the name of the database you want and click on it. The name is a link that will take you to the database. The screenshot below shows Web of Science as an example.
If you are off campus, the link will first take you to a login screen; log in with your ONU username and password (the same one you use to log into Canvas and your email). After you log in you will be able to access the database.