I'm not sure I really understand your question completely. For basic Network training, a course that prepares people for the CompTIA Network+ exam is a good place to start. If you're interested in more detailed or more advanced information I'll need you to e-mail me and provide more details about what exactly interests you about "best networking careers" training wise.
Excuse me if I'm missing something obvious here. I may still be on "Turkey overload!"
This was first published in December 2002