To work with the cards on a deep, meaningful level, you need to attune the cards to your own vibrations. There are a couple of ways to do this; Place the cards, carefully wrapped, under your pillow for a week, Meditate/Journey with your deck, Carry the cards with you during your daily activities, such as in your handbag when you go to work. Shuffle your deck regularly.
Through this, the cards will pick up your personal energies
What about others touching your cards? There are always myths and superstitions about letting others touch your cards. It’s down to personal choice. Popular opinion is to clear your deck after another person has used it
Always store your cards in a special place when not in use; wrapped in silk (the traditional way) & velvet or you may have a special box in which you place your cards