A user asked “Is there a way I can make my Outlook Calendar automatically open to remind of what I've got to do ?”

If you want Outlook to run when you start Windows, you need to put a shortcut to Outlook in the startup folder.

If you want Outlook to start in the Calendar folder, go to Tools, Options, Other tab, Advanced and select the calendar in the Start up in this folder field. If the folder you want to use isn’t listed you can create a shortcut using the /select switch:

outlook /select "outlook:calendar\subcalendar"