Mostly you will find citations to journal articles, but sometimes the full text to the entire article is available for free.
Try to find articles owned by RCC, by clicking on the 3 bars at the top left of the screen and select Settings, Library Links, then click on Riverside City College.
PubMed comprises more than 29 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.