How can I get my authorization code for student use? I have already downloaded ArcDesktop.

[AngelikiLagou]

I can't find a license or an authorization code in my account. When I try to open Arc Map it says: Could not connect to ArcGIS license manager running on host "No set". When I installed it, I wrote that I would authorize it later,as at the time I did not know how, but I still can't find it. 

[DanPatterson]

Authorizing your software—Help | Documentation 

Check your Junk email as well