In the course of Slalom helping clients move to the Office 365 cloud, I routinely use Powershell and it's SharePoint Online cmdlets (Office 365 & Azure AD cmdlets too!) to help manage their Tenant, both before and after migrations. While the UI contains all the tools for managing an instance, it immediately becomes tedious to click through the same actions for more than a few actions.
While the amount of cmdlets are lagging in quantity in comparison to On-Premises SharePoint, we are given several that can help us save deployment and management time. Below we'll walk through getting connected and then doing routine query transactions.