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Read the manual of your camera and look up every term you don't know. Then take a few days and just mess around. Your settings are saved in exif meta data, so you can just take a load of photos and then compare what impact different exposures and apertures have.
I'll be honest - one of the weird things about photography is that the better your camera, the less your skill matters because modern top-of-the-line DSLR cameras have such good software and sensors that the default values almost always get better results than you trying to manually adjust every setting. I guess more than ever the old press photography wisdom "f/8 and be there" holds true. Don't worry too much about settings. Worry instead about location, framing, timing, etc.