New to Mac and Garage band. Attempting to record an acoustic guitar w/o pickup and electric guitar. I have heard plugging directly into the Mac w/ adapter causes an unwanted natural sound. Most have suggested a mic for acoustic recording. Can anyone recommend an entry level microphone for recording an acoustic into garage band and also what I should purchase for my electric? I heard I will need an interface. I would like to use the Mac without plugging into any of my pedals or amp. Thanks for all help!