ing the citizenship application and IRCC is not very helpful...
Some background:
I landed as a visitor (EU national) in July 2017, received my work permit the following year and then obtained my PR in Feb 2019. I haven't left Canada since I landed in 2017.
1) Do I need to provide police certificates from Canada?
You will provide police certificates for countries OTHER THAN CANADA where you've spent more than 180 days continuously in the past 4 years. If you provided the PCC for your country of origin (the country where you were "residing"/"living" in immediately before establishing Permanent Residence in Canada) AND this period of stay falls within the last 4 years, you don't have to re-submit the PCC for that country for your citizenship application.
2) Regarding the language proof, I have a post secondary degree from a university
abroad where the instruction language was in English. Do I need to provide transcripts or just a letter from the university stating the instruction language was in English or both? do they require the originals or will a copy suffice?
Check this.
The proof can be your diploma/degree, transcripts or certificates. If you have your diploma and transcripts, then submit both.
3) Do I list my previous addresses and jobs from 2016-2017 before my arrival to Canada ?
You should provide all addresses for the 5 year eligibility period both inside and outside Canada.
If this is the wrong thread for these questions please let me know where I should post this instead.