Hello!
I'm not a nurse, but I'm a medical librarian. Please feel free to ask your local college/public/hospital librarian which databases you can use to access nursing info. CINAHL is a good source, as someone mentioned. Some databases will have fulltext articles available for you. If you can only find the citation of an article, but not the fulltext of it, please do ask the librarian there, as they can order it for you through an inter-library loan. Most places don't charge a fee for this service, especially hospital libraries. Please let me know if you have any more questions on research and I will try to help.