I don't want to tell you here initial ideas about chakras. First of all you are expert enough in this theme. I turn back to it because I found a new information that tells us about opening the chakras.
We hear too often these exciting words and begin to "practice" something we've read or hear -clearly to reach in some hours the Enlightenment.
But if we are serious, we can meet obscurations and obstacles when we do something, if our chakras are closed (and they are). In my practice I have this problem too. Yes, I do purifying practices, but in the last time I thought, it's necessary to think more about opening the chakras.
First of all I wanted to tell you an interesting learning story (I don't know what Teaching comes it from). I'm sure, you'll like it.
One young man passed many years to pray. But nothing was happend.
So he decided to go to one very important monk to ask him for advise.
That monk was sitting near his door and when the young man
told him his story, said: "Do you see that sieve there on the earth?
Put me please some water from the river".
Good, when a monk asks you to do something you have to do.
The young man took that sieve fom the mud. It was very dirty.
But the monk wanted it so as it was. Young man went to the river
and turned back without water. "Try once more",- said the monk.
So did he different times but could not bring any water to the monk.
"It's unpossible to bring water with the sieve",-said he finally to the monk.
"You are right. It's unpossible to bring water, but the sieve is now very clean."
So, I try to do often purifying practices, specially when I have to go to a ritrit. Lopon Tenzin Namdak said once "If you put nectar in a dirty vase, you will ruin the holy drink".
All this I tell you because I found a very interesting site with good description of chakras and what is more interesting for me, there are MUDRAS that they use to open these chakras.
I copy here a part of the page of this site with mudras, to have them near my eyes, but to use them you have to go first to the site where you can find very important informations and explanations about these practeses.
Open the Root ChakraLet the tips of your thumb and index finger touch.
Concentrate on the Root chakra at the spot in between the genitals and the anus.
Chant the sound LAM.
Additional techniques to open the Root chakra 
Open the Sacral Chakra Put your hands in your lap, palms up, on top of each other. Left hand underneath, its palm touching the back of the fingers of the right hand. The tips of the thumbs touch gently.
Concentrate on the Sacral chakra at the sacral bone (on the lower back).
Chant the sound VAM.
Open the Navel Chakra Put your hands before your stomach, slightly below your solar plexus. Let the fingers join at the tops, all pointing away from you. Cross the thumbs. It is important to straighten the fingers.
Concentrate on the Navel chakra located on the spine, a bit above the level of the navel.
Chant the sound RAM.
Open the Heart Chakra Sit cross-legged. Let the tips of your index finger and thumb touch. Put your left hand on your left knee and your right hand in front of the lower part of your breast bone (so a bit above the solar plexus).
Concentrate on the Heart chakra at the spine, level with the heart.
Chant the sound YAM.
Open the Throat Chakra Cross your fingers on the inside of your hands, without the thumbs. Let the thumbs touch at the tops, and pull them slightly up.
Concentrate on the Throat chakra at the base of the throat.
Chant the sound HAM.
Open the Third Eye Chakra Put your hands before the lower part of your breast. The middle fingers are straight and touch at the tops, pointing forward. The other fingers are bended and touch at the upper two phalanges. The thumbs point towards you and touch at the tops.
Concentrate on the Third Eye chakra slightly above the point between the eyebrows.
Chant the sound OM or AUM.
Open the Crown Chakra Put your hands before your stomach. Let the ring fingers point up, touching at their tops. Cross the rest of your fingers, with the left thumb underneath the right.
Concentrate on the Crown chakra at the top of your head.
Chant the sound NG.
Warning: don't use this meditation for the Crown chakra while you don't have a strong Root chakra (you need a strong foundation first).
This photo is from the site Veet.it and there are other photos to demonstrate how it works. I was really surprized to see them. I never thought this vibration can be used this way.
