add headings

Author: pdurbin

content/_index.md

@@ -15,6 +15,10 @@ title = ''
 
 *Installations of the Dataverse software from [countries](https://iqss.github.io/dataverse-installations/bycountry.html) all over the world. More [details](https://iqss.github.io/dataverse-installations/).*
 
+## Installing the software
+
 Our [Installation Guide](https://guides.dataverse.org/en/latest/installation/index.html) will help you install the Dataverse software. (An experimental [Docker installation](https://guides.dataverse.org/en/latest/container/running/demo.html) is also available.)
 
+## Joining the community
+
 We have a large, friendly, growing [community](/community). Please feel free to browse through the chatter on our [mailing list](https://groups.google.com/g/dataverse-community) and our [chat room](https://dataverse.zulipchat.com). You are welcome to join our monthly [community calls](https://dataverse.org/community-calls) or watch some [DataverseTV](https://iqss.github.io/dataverse-tv/). Come meet us in person at one of our [events](/community/events)!