I don't know how to register the dynamic CRM online plug-in.

I am currently using dynamicsCRM online, but I am having trouble knowing how to register plugin.

What have you tried
·Install Visual Studio and build plugin code
·Install dynamicsCRM SDK
That's it.

SDK\Tools\PluginRegistration
Open PluginRegistration.exe stored in and click
CreateNewConnection on the menu bar. The login screen that appears when you press is stopped because you cannot log in.

Do I need the dynamic CRM server login information here?
If so, do I need to install a new dynamic CRM server locally?

Please teach me.