You need to install the Windows Insider app by Microsoft from the store. Once installed and opened you must agree to the terms of service and select Fast or Slow ring. At this point in time Fast ring is superior and more stable, in my opinion. Your 930 should be fully charged or mostly charged and plugged in, just in case downloading the update takes a long time. Backup all of your files, photos, music, etc. first. Perform the backup function in Settings to save current setup in OneDrive.
Be prepared to perform a hard reset and maybe lose some certain app data or game saves that are not backed up in the cloud of those services.
There are good articles by staff here at this site with step by step details.