In this video lesson by NextLevelGuitar.com, professional Sound Engineer Mike Freeman gives some home recording tips for recoding acoustic guitar. The tips include discussions on microphone placement, microphone vs. direct recording, how to use a compressor to improve guitar sound, software selections and other home recording tips.
NLG also posted a video lesson by Mike on the types of home recording equipment, which can be viewed here. You can find more guitar instruction by NextLevelGuitar.com on their web site or in vBook format.
Great tips, he is damn right about positioning the mike.