How to get Helium IoT?

How can one acquire Helium IoT? Is there a specific process or platform through which it can be obtained? Are there any prerequisites or requirements that need to be met in order to obtain Helium IoT? Are there any limitations or restrictions on who can acquire it? Is it available for purchase directly from Helium or through third-party vendors? Can you elaborate on the steps involved in acquiring Helium IoT?