comand line

[solutions]

greetings. i am seeking to learn more about windows command line.
i want to fully break down these commands, the support tools, tcp/ip commands, resource kit tools and the registry. can any one tell me where i can find answers online, or places i can go in person to learn in depth about these powerful windows subsystems? i am willing to compensate. most schools out there only give you the basics; not the meat and potatoes.