CINAHL is an acronym. It stands for the Cumulative Index to Nursing and Allied Health Literature. CINAHL Plus with Full Text provides access to hundreds of articles in nursing journals as well as those from an additional rich trove of allied health disciplines. It also includes evidence-based care sheets, quick lessons, clinical trial information, and legal cases.
Unlike performing a general Google search, a search in CINAHL will lead you quickly to the kind of information you need and will direct you those articles available in full text that you have access to through the college's subscriptions. So it's free, the information is reliable, and the information is plentiful.