The Chronicles of France Schengen Visa
https://www.ivisa.com/france-schengen-visa
Now you will need to collate all the documents you will need to submit. Canada, on the flip side, is pretty modern and simple to cope with. You need to supply photographs of engagement, marriage cards etc if you're not yet married.
You might also be requested to demonstrate a return or onward ticket. If you intend to travel to any of the Schengen countries for the very first time, make sure you apply for the visa early sufficient to be sure that you may travel on the day you planned. Please understand that there's a little difference between the visa validity and the length of stay.
Same is true for Italy, you will need to visit the Italian embassy in Doha, and so forth. It is one of the most-visited countries in Europe. For this, it needs to be your main destination.