If you see a "PDF Full Text" or "HTML Full Text" icon, select it to open the full-text of the article.
If you see an icon that says select it to see if the article is available full-text in another library database.
If the article is not available via any full-text links, you may be given the option to request the article free of charge by clicking on alink. The article will usually arrive in 2 to 3 business days.