Don't worry, it just takes a lot of patience particularly at the beginning. Feel free to post pictures here and ask questions. We don't bite!
NaturesPixel was right about just using the AUTO settings for awhile and noticing what your camera sets things at. After awhile you'll notice a pattern. Sticking to one type of picture as Wulf suggested is a good idea, too. WHen you get more comfortable taking portraits then you can try a manual setting to see if you can duplicate what the camera does in AUTO.
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