Bike looks very well preserved. You'll be needing a proper service manual. Check your conversations.
We also have a guide you may find useful:
www.hondatwins.net
Welcome to the group.
We also have a guide you may find useful:

Basic Checklist for that New to You old Bike
NOTE: this was originally written for CM/CB 400/450's but alot of it applies to all bikes, double check any spec's listed within this Congratulations, you are the proud owner of a Honda Twin :D . One that may or may not have been maintained properly :o . Of Course, the previous owner (PO :evil...
Welcome to the group.