This video explains the salary of a nurse in USA and tries to describe the following;
Average hourly salary of a registered nurse
Yearly pay of a registered nurse
Average salary of a travel nurse
Pay for local contract nurse
The factors that influence salary of a nurse which include;
Hours worked per week
State where you work
Specialty
Staff nurse or travel nurse?
Shifts worked
Certifications

This video is a good guide on nurse recruitment agencies for international nurses