I have been able to open my work-related email previously with no problem. All of a sudden, when I try to open my email, it opens with Outlook Web App and it is not what I want. It displays differently, much information is lost, and I do not like it, understand it, or want it. How did this happen and how to I get rid of it. Just prior to this happening I started a new hotmail account since my previous one had been hacked. 

I think you need to speak to your local IT Staff

Hi,

Basic on your description, I suggest open Outlook and run Test E-mail AutoConfiguration to get the URL for OWA.
Then run IE with InPrivate Browsing and try to login your OWA.
If the issue persists, please try to contact your Exchange administrator to double check the connection of OWA in server side.

Thanks