A site collection is the group of websites under a common top-level site with the same owner on the site administrator. To create a site collection for delete site collection on Office 365 is easy to do.

Create a site collection SPO

Be sure web application is where you want to create a website and define the template which you want to select when going to create the site collection.

Also, make sure you have administrative rights to do so for.

  • Login to Office 365 portal page using your login id  and password

https://portal.office.com/login  

  • Select the app launcher icon Office 365 app launcher icon in the upper-left and choose Admin.

  • It will redirect to the admin page, where multiple options will be available relating to admin tasks.

  • Once Admin wizard will get appears, select Admin center option and select SharePoint.

  • After clicking SharePoint, it will open new URL in a new tab of the browser. Here select site collections to create a new site collection on SPO.

  • So we are selecting now as a Private site collection, once we are clicking this it will take us create site collection fill properties page.

Below details we need to fill: Title will be the default, site name, language and site template. We have described briefly template selection and use.

https://sharepointsolutiontips.blogspot.in/2016/10/brief-description-about-site-templates.html

  • Click OK to create site collections. The new site collection will appear in the URL list. The URL is the site collection location at which the administrator can start to create and manage sites.