EM4720 Dual Band Gigabit AC1750 Router

• EM4720 I would like to know my local (computer) IP address. How do I obtain this address?
• EM4720 How do I configure my router as a repeater?
• EM4720 How to configure my router as an Access Point?
• EM4720 How do I configure my router so I will be able to use a function that needs to be accessible from an external location (port forwarding)?
• EM4720 How can I use the WPS (Wifi Protected Setup) method to setup a secured wireless connection between my PC and my router?
• EM4720 What does the function QoS mean and how to use it?