Try getting him used to your presence. I believe the below method has been already mentioned in the articles posted, but here it is:
Approach the cage, and when the bird shows the first signs of fear, stop. Hold still and wait. After the bird calms down, move in closer. Wait until he calms down. Gradually, you will be able to sit next to the cage and talk to the bird. Get the bird used to your presence. Once the bird is no longer afraid of you, (could be days or weeks, even, depending on the bird) try opening the cage and resting your hand there and wait until the bird calms down. Start moving your hand slightly closer each time you do this. With time and patience, the bird will allow you to stroke its chest, and may even perch on your finger. It takes a LONG time for this- my cockatiel Archimedes took 6 months to completely hand-tame. (He was a cage-bound pet-store find they'd had for two years.) And this is the method I used, plus I gave him treats after he let me touch him and when he would tolerate my hand near him. He is a sucker for banana pieces and raisins.
As far as biting goes... Just deal with it. The bird will learn on its own that you are not a threat after you handle it over and over and over every day, and will start to warm up to you.
Hope that helps any.