After you installed Exchange Server Certificate and enabled the services on Certificate like IIS, SMTP, UM etc. You will have configure the virtual directories so that you can access the resources like OWA, ECP, Autodiscover, ActiveSync, OutlookAnywhere from Exchange Server.
There are several articles available on the internet, still I thought of writing one [for myselft ;) ]
 
Here is the list of commands you need to run to configure the different Virtual Directories. Run Get- commands to check if you have configured the Virtual Directories properly or not.

Exchange Control Panel:
Get-ecpVirtualDirectory -Server "ExchangeServerName" | Set-ecpVirtualDirectory -InternalURL https://webmail.exchangeranger.net/ecp -ExternalURL https://webmail.exchangeranger.net/ecp
Get-ECPVirtualDirectory -Server "ExchangeServerName" | Fl InternalURL,ExternalURL

Outlook Web App:
Get-OwaVirtualDirectory -Server "ExchangeServerName" | Set-OwaVirtualDirectory -InternalURL https://webmail.exchangeranger.net/owa -ExternalURL https://webmail.exchangeranger.net/owa
Get-OWAVirtualDirectory -Server "ExchangeServerName" | Fl internalUrl,ExternalURL

EWS (Exchange Web Services):
Get-WebservicesVirtualDirectory -Server "ExchangeServerName" | Set-WebservicesVirtualDirectory -InternalURL https://webmail.exchangeranger.net/EWS/Exchange.asmx -ExternalURL https://webmail.exchangeranger.net/EWS/Exchange.asmx
Get-WebservicesVirtualDirectory -Server "ExchangeServerName" |Fl internalURL,ExternalURL

Autodiscover:
Set-ClientAccessServer "ExchangeServerName" -AutodiscoverServiceInternalUri https://webmail.exchangeranger.net/Autodiscover/Autodiscover.xml
Get-ClientAccessServer "ExchangeServerName" | Fl AutodiscoverServiceInternalUri

ActiveSync:
Get-ActiveSyncVirtualDirectory -Server "ExchangeServerName" | Set-ActiveSyncVirtualDirectory -InternalURL https://webmail.exchangeranger.net/Microsoft-Server-ActiveSync -ExternalURL https://webmail.exchangeranger.net/Microsoft-Server-ActiveSync
Get-ActiveSyncVirtualDirectory -Server "ExchangeServerName" | Fl InternalURL,ExternalURL

Offline Address Book:
Get-OABVirtualDirectory -Server "ExchangeServerName" | Set-OABVirtualDirectory -InternalUrl https://webmail.exchangeranger.net/OAB -ExternalURL https://webmail.exchangeranger.net/OAB
Get-OABVirtualDirectory -Server "ExchangeServerName" | Fl InternalURL,ExternalURL

OutlookAnywhere:
Set-OutlookAnywhere -Identity "ExchangeServerName"\Rpc (Default Web Site)" -InternalHostname webmail.exchangeranger.net -ExternalHostName webmail.exchangeranger.net -InternalClientAuthenticationMethod ntlm -InternalClientsRequireSsl:$True -ExternalClientAuthenticationMethod Basic -ExternalClientsRequireSsl:$True
Get-OutlookAnywhere -Identity "ExchangeServerName"\rpc (Default Web Site)" |fl InternalHostName,InternalClientAuthenticationMethod,InternalClientsRequiressl,
ExternalHostName,ExternalClientAuthenticationMethod,ExternalClientsRequiressl

Cheers,