Creating a TCP client using the net package in Go allows developers to connect to servers seamlessly, mirroring the functionality of the telnet command. By initializing a Go project and employing the `net.Dial` method, users can establish a connection to a specified address, handling potential errors effectively. This lesson explores how to send input from standard input to a server using `io.Copy` and addresses common challenges, such as blocking calls, by leveraging goroutines for concurrent execution. The final outcome is a simple yet operational telnet client that communicates with an echo server, demonstrating the practical application of Go’s networking capabilities.