Are you, or have you been licensed in a state other than Nevada? Do you have proof of at least 60 hours of pre-licensing education?
All together, you need proof of 90-hours of pre-licensing education to apply for a salesperson's license in Nevada.
See Form 501: http://red.nv.gov/uploadedFiles/rednvgov/Content/Forms/501.pdf
This course will give you instant access to the online course materials. This package also includes hard-copy materials; including audio CD's and a workbook.