help with combining 2 ms office accounts

I inadvertently have ended up with one personal Office 365 account and also a insitution Office 365 account.  One had the apps I use (word, excel, etc) but no email and the other has my email but none of the apps.  How do I get everything in one account?  I know there are links for how to do this but I'm not experienced enough to follow them without getting lost or making mistakes.  I need step by step kindergarten type instructions and nothing on MS website is written for folks like me.