If you think your research may deal with live human subjects and gathers identifiable, private information, you will need IRB Training.
Of course not all research that takes place in a library fits the Federal definition of human subjects research. This is particularly true for autoethnography and/or examining nonidentifiable statistics.
On the other hand, IRB training qualifies you to obtain the approval needed to create questionnaires, usability testing, perform a variety of assessments, and publish your findings.
IRB training is free and takes from two to six hours, and the library has not had a representative on the Institutional Review Board. since the spring of 2017.