When your crystal arrives.
When your crystals arrive it is a good idea to get to know them by holding each one in turn to see what they 'say' to you.
You can keep them in their organza bag and put them under your pillow, in your pocket of handbag or somewhere you can easily see them.
To cleanse them you can run them under the cold tap and put them in the sunlight or moonlight to charge them up. You can re-charge them every 6 months or so.