Cisco's DevNet is a great resource for learning to automate with Intersight and there are Quick Start guides, sample code, and Learning Labs at https://developer.cisco.com/site/intersight/. DevNet Learning Labs provide an in browser development environment where you can run code side by side with guided help, and there's no need for local infrastructure:

There are labs that cover several programming environments including one that uses Intersight's PowerShell module: https://developer.cisco.com/learning/labs/cisco-intersight-rest-api-powershell/introduction/
Feel free to post any questions on using Cisco Intersight's PowerShell module to this article.