problems accessing account

I am currently trying to access my email account as it is my main account in which i use.  I am a student and all my lecture material is within my email account.  Every time i try and access this account this message is displayed,  This account cant be used to access outlook.com.  Your currently signed in with an office 365 email account, which cant be used with outlook.com.  Any help would be much appreciated, even if my emails could be redirected to a different email address.