 When you create a new collective, it opens to a helpful page which describes what you can do. This is the front page of your collective and you can edit it like the other pages. Start by adding collaborators via circles inside the Contacts app. Every collective automatically creates a circle, so you can simply add people there. Now everyone can contribute content. You can work on pages at the same time of course, since it uses next-lot text. Different authors can be highlighted using the Author Colors feature. You can link other pages for cross-reference. Simply mark the text you want to link and pick Link File. This is really helpful for referring to important documents across your collective. And if you want to jump back to a previous version, the Version History is available in the right sidebar, just like you know from files. You can find the full set of pages you created in the Collectives folder in files. This way, it is available on all your devices, whether mobile apps or desktop client. Pages can also easily be shared this way with people outside of your organization.