By request, here's a follow-up post to Court Cards in Tarot: reversed court cards.
When any card is reversed, its energy is weakened or manifested negatively. Surrounding cards will tell you more.
Reversed King: control freak, exaggerated manifestation of his suit (for example, reversed King of Swords can be cruel/heartless). Sometimes a reversed King is "less than" his upright energy, which can be favourable or not (the reversed King of Swords can have his edge blunted).
Reversed Queens: over-the-top manifestation of their qualities (reversed Queen of Wands is sometimes an unscrupulous "other woman"), or could suggest the attraction factor of the Queen is missing/blocked.
Reversed Knight: blocked/delayed change or exaggerated expression of the suit (reversed Knight of Pentacles can be a stick in the mud).
Reversed Page: very immature, or "bratty" expression of that particular suit (reversed Page of Cups can be whiny/prone to tantrums).