All HF operators are encouraged to check-in to the National Traffice Net (NTN), and ALE enabled stations are encouraged to participate as well.
Download the NET9 Users Guide from the NHQ Communications site by accessing eServices, then go to the Communications link at the bottom of the page. You'll find the NET9 User Guide on the Communications Library, General Information tab.
Or use the link below for direct download. (Users must be logged into eServices before clicking the link)