Cic website has an application guide including a detailed list of documents.
Check it over here
https://www.canada.ca/en/immigratio...er-dependent-child-complete-guide.html#gather
You'll have complete list of doc, which ones your need to get translated, who can translate etc.
Before you proceed for marriage events, study the guide thoroughly, watch YouTube videos so that you are collecting all the docs for attaching those with your application.
All the best.