There are many 'terms' in photography and it is important to familiarize yourself with them. Below are a few important terms. I will go over them in more detail as time progresses.
Shutter: timed operation on a camera.
Focus: there are two ways to focus a camera. Auto focus - the camera will focus for you. Manual focus - you have to focus the camera/lens.
Aperture: the opening in the lens
F-stop: The measurement of the opening of the lens associated with a numerical number. (i.e. the opening of the lens at an f-stop of 2.8 is much larger than the opening of a lens at an f-stop of 22).
Shutter Speed: How long the shutter is open. On manual mode-it is important to begin shooting no lower than 60. This is 1/60 of a second. If you go lower than this number - your image may be blurry due to camera shake.
ISO/ASA: This is essentially the same as film speed. The higher the ISO, the less light you will need. (i.e. outside on a bright sunny day you can shoot at ISO 100. Inside with normal house lights you would shoot at an ISO of 400). *A good rule of thumb for what ISO to shoot at: somewhere between 100-400.
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