I am trying to study the connection method to LDAP and AD, but don't have a working AD.
I do have a full working Window 2008 Server.
Is there a sample AD & LDAP server I could use for practice?
yes you can try it for practice
or you can use an open-source alternative such as:
The UnboundID LDAP SDK provides classes to create an in-memory LDAP server. This method has the advantage of not having to install and maintain a server. The running in-memory server is fully LDAP compliant.