i need to use the internet but my tv is far from my wifi router... SO can someone tell me how to use an android phone/iphone to tether my internet over to rpi with usb?? NOT TOO TECHNICAL cos im just starting out with raspbmc.
USB tethering requires drivers installed connecting your Android / iPhone simply won't work.
Your only options for internet connectivity would be a wifi / ethernet bridge like a Vonets VAP11G or a compatible wifi dongle.