I found this Article on the first house and thought i would add it here:
The First House: Begins with the Rising Sign, the sign that was rising on the eastern horizon when you were born. This is also called the Ascendant or Ascending Sign and is one of the most important points in the horoscope. The Ascendant has an affect on your appearance. In some cases, a person can look more like their Ascendant than their Sun-Sign.
The First House has to do with your "outer personality", the impression you make on people when they first see you. But it goes beyond that. It also shows how you begin anything, your first approach, your first action. For instance, someone with an
Aries Ascendant (Aries Rising) will tend to charge right in, while a Taurus Rising person has to take their time and build up momentum. A Leo rising will get someone else to do it for them (probably some poor soul with Virgo Rising).
The placement of planets in the First House is also important. Any planet there, especially if it is in the same signs as the Rising Sign, will give you traits of the Sign that the planet rules. In other words, if you have Mars in the First House, you will tend to be active and aggressive like an Aries Sun-Sign. Saturn will make you cautious and careful at first approach, like a Capricorn Sun-Sign. If there is more than one planet in the First House, the planet that is closest to the cusp (beginning) of the house usually predominates. The only exception is if another planet in the house is stronger by sign. Click here for a complete list of Planets in the First House.
from
http://www.bobmarksastrologer.com/AngularHouses.htm