Using crystals boils down to this
1) Clearing
2) Programming
3) Repeat
And that's it.
Every month's a good time to clear a crystal of stagnant energy. You see, crystals are etheric vacuum cleaners. They suck up the bad stuff. You want to avoid that.
Clear a crystal simply by leaving under the sun for a day or soaking it in saline solution for a few hours.
Then Programme. Hold it in your hands and talk with the crystal. Tell it what you want. Your energy then goes into the crystal and is amplified .
That should be enough to keep you happy and healthy.
Remember to pick up a pack of bratwursts!