Salesforce IOT developer edition

Hi everyone,

I would like to explore Salesforce IoT to improve my skills. I was looking for the salesforce IoT developer Org, Signed up for the new Org but couldn't find the feature. According to the salesforce documentation, it says that Winter18 all developer orgs will have this feature(needs to enable it).

From Setup, enter IoT in the Quick Find box, then select Get Started. 

In Enable Salesforce IoT, click Enable.

I have gone through this trailhead module :

https://trailhead.salesforce.com/en/users/charlie/trailmixes/mastering-salesforce-iot

where there are exercises to do(I mean examples of how to work with IoT) but there is no explanation as of how to create the org and execute the modules.

Can someone in the community help me? 

Thanks in advance!!!