The Horary Chart cannot be interpreted equally to a Natal Chart. It's unwise for the astrologer to look in depth; only look for the answers, and avoid extra information. For this reason, Horary Charts are often answered as "yes" or "no"; although it's possible to find deeper meaning. Other small pieces of information- the intentions of those involved in the question, different options and paths to take, etc- may also be sought out in the reading.
How to Do It
Because of its fast pace around the earth, the moon is one of the most important placements in Horary Astrology. Next to the moon, the Houses themselves also have extreme importance. Aspects to the Angular Houses should be taken into consideration. The motives and intentions of the asker are represented by the 1st House, and the location of the question is determined by the astrologer. The location of the question is found in the Houses, and the Lords of those Houses are considered the significator.
querent - question
quesited - subject
significator - solution
essential - good
accidental - bad
An essential dignity comes from a fortunate planet. Planets in comfortable signs, their ruling signs, and especially their exaltations are considered essential. Essential dignities also stem from direct motion. Comfortable Houses are considered the angles, but it's possible for certain planets to be uncomfortable in certain Houses. Good aspects also create essential dignities, and all essential dignities are considered "yes" or positive.
An accidental dignity comes from misfortune. Misfortune is considered a planet in an uncomfortable sign, detrimental sign, or a falling sign. Dignities are also considered accidental when the planet is in retrograde motion. Uncomfortable Houses are the 6th, 8th, and 12th, but certain planets are capable of finding comfort in them. Hard aspects also create accidental dignities, and all accidental dignities are considered "no" or negative.