Outlook - combining a/cs

After a PC re-build I am now mightiliy confused as to how my PC repairer has left my Outlook 2010.
I have now about 6 a/cs down left hand side.
At the top is one called Outlook, and doesn't seem to be associated to any email address. How do i get rid, or change this to be primary address?
For my primary adress i have a new entry which receives email.
I also have a duplicate of this which doesn't receive email, but has folders of those i have stored and want to retain.
I have two more assocaited to my secondary address, the unused of which I have deleted, but want incoming emails to go in primary folder.

Hope someone can make sense of this and aid me to resolve.....
Note also that both my a/cs are google and I ahve setup as IMAP, as this seems to be better for gmail & android phone.