You should run the updatetool(if it isnt updated yet a dos prompt will appear) after that you go to:
C:\Users\username\GlassFish_Server\updatetool\bin(this is my Glassfish Server location, yours could be different)
run updatetool
click on available Add-ons and search for:
Java EE 7 Tutorial and click on install.
Now you have it at the following location:
\GlassFish_Server\docs\javaee-tutorial