The primary resource for finding journal articles is PubMed. However, there are many other great resources that you can use to find published research. Google Scholar, for instance, relevancy ranks it's results allowing you to quickly see the most cited and clicked on articles, as opposed to PubMed which displays the most recent articles first.
Electronic textbooks can be found by searching for the title in the "Journals, Databases, and Books" search box on the library home page. Most required or recommended medical student texts can be found by searching through individual publisher holdings below. Links directly to books for individual courses are available in Brightspace or by using the tabs for the course title on this page.