Trying to give my Intro to GIS students access to GeoNet so they can get help with projects. Thanks for any help!
Geonet is a public forum as anyone can view the content. If you want to encourage your students to post questions they just need to create a login.
ArcGIS Create Account
Create account—ArcGIS Online Help | Documentation
You state you are an admin, what "admin" specifically? Are you a My Esri admin, AGOL Organization admin, both, or something different?
Beyond the question above, I think you should encourage students to create their own personal accounts and not organizationally associated accounts. Assuming the students will eventually graduate, they can take their GeoNet contributions wiht them after school.
Several answers here, depending on different factors.
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