Connect Architecture

Is there a White Paper or infographic available that documents the Connect Architecture and terminology? I really need to see how all the various pieces fit together. The Database, the “Server”, Weaver and Merge, speed units, the REST API, etc. etc.

No answer? I continually get strange errors in Connect and have no way to troubleshoot them. The latest is:

W3001: Error while executing plugin. Socket Error # 10061Connection Refused

Execute Data Mapping: W1603: Plugin Failed.

Socket error? Connection from what, to what?