Microsoft has recently published a learning roadmap to understand Windows PowerShell for SharePoint 2013. Microsoft SharePoint 2013, as many other updated Microsoft products, has an increased number of cmdlets to perform SharePoint management tasks.
From the article —
If you are new to Windows PowerShell in SharePoint 2013, this article can help you identify what you need to learn to understand how to build expertise for Windows PowerShell in SharePoint 2013. It includes prerequisite articles that explain Windows PowerShell fundamentals. You have to understand the prerequisite technologies first. Windows PowerShell in SharePoint 2013 assumes that you understand basic concepts. Afterwards, you can start to learn about Windows PowerShell in SharePoint 2013 with the resources in the Level 100 (introductory), 200 (intermediate), and 300 (advanced) sections.