EM4700 Wireless 300N Router

• EM4700 I would like to know my local (computer) IP address. How do I obtain this address?
• EM4700 How do I configure my router as a repeater?
• EM4700 How to configure my router as an Access point ?
• EM4700 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)?
• EM4700 How can I use the WPS (Wifi Protected Setup) method to setup a secured wireless connection between my PC and my router?
• EM4700 What does the function QoS mean and how to use it?