Technofreak:
There is currently nowhere to my knowledge where this information can be found in an easy to understand manner all in one place. The web page I mentioned did pretty good job of this but it's been taken down
There's this:
https://covid19.govt.nz/covid-19-vaccines/get-the-facts-about-covid-19-vaccination/nz-vaccine-facts/
Haven't viewed the videos.
Unfortunately "the facts" on vaccines and mRNA vaccines in particular aren't "easy to understand" without some prior knowledge.