The best sites will already autofill your data with Canada and your phone prefix. Countries are often in a drop down box so you can scroll through and select the relevant one. You will usually have to add your phone number, postal address and the country you are playing from.
You will be asked for personal information including your name, surname, date of birth, and email address. Ideally use an encrypted password keychain to keep your password and your account safe. Sometimes your username will be used in a casino tournament leaderboard or as your display name when you are playing live casino games with other players. Your username is the identifier you will use to login to the casino.
You’ll need a few basic pieces of personal information to get started. Registering at a new real money online casino has never been easier. How to create a real money online casino Canada account