How to return to the original format in Hotmail after looking at the terrible new outlook mail

I clicked on the Ad for the new outlook email to see what it is about and immediately disliked it, it is a case of 'if it ain't broke don't fix it' but clicking on the ad instead of giving me information and a choice automatically changed me over to the Outlook format. Having a look around I discovered that I could return to the old hotmail so I did. However all my mails are now in clumps that are related to a particular recipient, this has made it a **** to find details of correspondence on a particular subject when there has been a number of emails back and forth to a particular individual so my question is how do I get my emails back to the order they were in previously? Also is there anyway to avoid going to the new Outlook format indefinitely as I think it is appalling and unnecessary.