# What to read next

[latest-hackfest]: https://osm.etsi.org/wikipub/index.php/Latest_OSM_Hackfest_Material#Hackfest_Material
[developer-guide]: https://osm.etsi.org/docs/developer-guide/

If you want to learn more, these additional contents are highly recommended:

- **[VNF Onboarding Guide](https://osm.etsi.org/docs/vnf-onboarding-guidelines).** This guide includes all that you might need to onboard your VNF or applications in OSM.
- **[OSM Developer Guide][developer-guide].** If you want to contribute to OSM development, it is highly recommended reading this guide first.
- **[Sample VNF Packages](https://osm.etsi.org/gitlab/vnf-onboarding/osm-packages.git).**
- **[Contents from latest edition of OSM Hackfest][latest-hackfest].**
- [OSM Workshops and Webinars](https://osm.etsi.org/wikipub/index.php/OSM_workshops_and_events)
- [Release notes and white papers](https://osm.etsi.org/wikipub/index.php/Release_notes_and_whitepapers)
