Database or the Web?
You may be accustomed to finding journal articles simply by searching the web.
You can do that and, if you do, I recommend installing Passkey, and searching scholar.google.com. When you are searching from an off-campus location, Passkey will give you access to articles in the journals the library buys (not just what happens to be freely available).
On the other hand, the library databases will lead you to articles that you won't necessarily find on the web. In databases, you can execute complex searches, follow subject headings (descriptor terms) and narrow your search results in a variety of ways.
Don't get lulled into the web search trap. There's so much more available to you through the library.