Getting Started with Office 365 Sharepoint Site

Assuming that you are logged into your Office 365 Portal if not then you can login at   https://portal.microsoftonline.com/admin/default.aspx. You will use your username and password to access the administrative portal for Office 365. If you’ve forgotten the password, reset it by using the forgot password option. After successfully logging in, go to the Admin menu and select Sharepoint. This will be the page from where you will administrate your Sharepoint site. After it has been loaded, you will use this to manage your sites.

You should have a few urls lists, eg: https://domainname.sharepoint.com.

Checking ownership of the domain

You can check the ownership of the domain by selecting the domain and clicking the owners dropdown, click on it and choose manage administrators. You will be able to see the primary site collection administrator.

Adding Administrators

You can add the administrators by selecting the URL and then selecting the Owners button. Once it is selected, you will see the primary site collection administrator and an option to add / remove secondary administrators. You can search for users from the address book who you want to give admin access to or you can also add non-users by choosing option outside of your domain.

This guide doesn’t lists all the features, but i though something will be better then nothing.