The official document from the 1st Assembly is going to be a large one.
In the interim here are two documents to get you started:
The first one is the concise Tweet-sized version of the livestreamed part of the 1st Assembly. It runs to 7 pages and includes associated online comments on the whole process.
It is a good starting place to get an overview of the deliberations that took place.

plenarycouncil_firstassemby_oct2021_tweetversion_pdf.pdf |

plenarycouncil_firstassembly_oct2021_roughtranscript_opensessions_pdf.pdf |
Some of those Interventions were published on the Catholic Weekly website. How long they will remain available online is unknown. https://www.catholicweekly.com.au/category/plenary-2020/
May the Holy Spirit bring to full completion the work He began in the First Assembly of the 5th Plenary Council of Australia.
Amen.