Cards are related to the Astrology. The four suits of the cards associated with the four elements.
Hearts (denotes love) = Water
Clubs (Indicate level of happiness) = Fire
Diamonds (predict money) = Earth
Spades (augur sex) = Air

Long years before people used cards to play games, they were used to foretell the future. In fact, playing cards were invented for divination purposes.
Basic meanings of the cards are as follows:

HEARTS (Cups):

Ace: love, friendship, the home and distinct happiness

King: fair haired man, affectionate, generous, impetuous, honest man, hasty in decisions, not to be relied upon for advice

Queen: fair haired woman, trustworthy, faithful loving woman, gentle & pleasing
Jack: fair haired young person, good friend, a close (or long lost) friend

10: good fortune, happiness, good news, happiness in family

9: the 'wish card', dreams and desires will come true

8: invitations, but also partings, parties or celebrations

7: someone is unreliable, broken promises by friends

6: unexpected good fortune, generosity, imposed upon by untrustworthy people

5: jealousy, inability to make a decision

4: changes, travel or postponements, marriage delayed, bachelor or spinster

3: be cautious an impulsive decision threatens good ones

2: success by careful thought, friendship

SPADES (Swords):

Card Suits - Spades

Ace: conflicts, a difficult love affair, misfortune, bad news, tidings of death

King: dark haired man, ambitious, usually successful, his ambition overrides everything else

Queen: dark haired woman, seductive or unscrupulous, treachery, betrayal, malice, widow

Jack: dark haired young man, well meaning but lazy person, hindrance in all work

10: worry, grief, imprisonment, negation of all good

9: bad luck, can mean delays or quarrels, all kinds of unhappiness in all things

8: disappointments and opposition, be cautious, friends might turn out to be rivals

7: a warning against loss of friendship, quarrels with friends, bad things

6: an improvement in the person's life, use perseverance to make your plans work

5: anxiety, setbacks, interferences, success in business, harmony in partners

4: jealousy, business troubles, sickness, minor misfortunes delay project

3: partings due to faithlessness, journey, bad things in love or marriage

2: scandal, gossip, danger of deceit, change, removal, loss of home, division

DIAMONDS (Coins):

Card Suits - Diamonds

Ace: money, a ring, important message, or a valuable gift

King: fair haired man, stubborn and powerful, vengeful, dangerous when crossed.

Queen: fair haired woman, flirt, sophisticated, witty, interferes in other's affairs
Jack: a relative, someone not really reliable, selfish or jealous, bad news

10: journey, changes usually bringing wealth, money as objective, maybe not result

9: opportunities and surprises, usually financial, taste for adventure, travel, changes

8: late marriage or new relationship, unexpected money, a journey

7: a gift, lies, rumours, unlucky gambler, criticism

6: a reconciliation, warning against a second marriage, early marriage; early end.

5: successful meetings, especially business, unexpected news; may be business success

4: an inheritance, changes for the better, unhappiness from bad friends, betrayal

3: legal or domestic battles, quarrels, domestic disagreements

2: a great love affair increases in importance, opposed by friends
Clubs (Wands):

CLUBS
Card Suits - Clubs

Ace: harmony, property, achievements, love, peace of mind, professional success

King: dark haired man, honest, open, generous and faithful

Queen: dark haired woman, strong, helpful, attractive, nice woman, inclined to be temperamental
Jack: a reliable friend, sincere but impatient

10: unexpected money, good luck or a gift, unexpected good fortune with bad loss

9: a new romance, disputes with friends, bad quarrels

8: opposition, chance of recklessness, someone will use money not his own

7: prosperity, chance of romantic interference, good fortune, beware of opposite sex

6: business success, profitable business in partnership

5: help from a friend or spouse, marriage with a wealthy woman

4: bad change of fortune, failure of project due to friends

3: good marriage or partnership, long engagement, and then a fast wedding

2: disappointment and opposition from friends or associates
In Closing...

Have a little fun with this, it is a very enjoyable method of divination and accessible to everyone.