The following are resources that you may find useful based on your current class.
For this course, the main resource you should use is CINAHL. You can also check out the NURS 2200 Search Tips page for additional help.
For an assignment where the first author/any author needs to be a nurse you should use CINAHL.
For an assignment where the article needs to be a particular type of study you should use PubMed, as it has better filters for study types.
If you want to try using something else for your assignment, consider using one of the other nursing databases you have access to through being a student at UCCS. These are often more specific in what they cover than CINAHL and PubMed.