Binding yourself to the Earth? Do you mean committing yourself to the Earth for future lifetimes or for healing and grounding? The first, I do not recommend. This was done centuries ago with witch covens. A member of the coven would bind themselves to the Earth so when they die, they would still be here to help their Coven. This is not done any more.
As for the later two, healing with Earth on a personal level is great. And having a grounding with Earth is 80% needed for many magick spells and intuition. Both listed here are from "Earth Power" by Scott Cunningham.
Healing with Earth. Also good for meditating with Earth.
Find a spot where the Earth is bare, uncovered with concrete, plants, leaves - pure fresh soil. Sit or lie down on the Earth. Mentally see your wound or disease sinking into the Earth. Feel the pain and anguish, the physical and emotional effects of the problem running down into the ground beneath you. Sense the rhythm of the Earth - feel the steady beat of nature pounding away. It should pulsate in tune with your heart, pounding until you feel your whole body undulating with energy. Then feel it coming - cool, deep, soft energy rising from the ground up into you. Rise, dust yourself off, and check to see if you feel different.
You can add a personal affirmation to this if you choose. I recommend this exercise for all people of the Night. Works wonders. Better than just rolling in the dirt. ;)
To help keep Earth with you try this.
An Earth Charm
Tie up in a small green square of cloth some fresh, rich soil. Firmly tie this so no earth can escape. Carry this with you if you have troubles with stability, security, and self-control; if you are apt to let your emotion rule your life; if you are constantly angry or nervous. This amulet of Earth will help.
Do the Healing first - then make the amulet. ~ billy
