November 19, 2012
As a beginner it is recommended you start with a Harmonica in the key of C, as just about every beginners Harmonica tutor book will be written in C and many have a CD. (If you are just starting, then your C harmonica will be fine.)
As you progress, then you can buy others. If you join in with guitar players, then the following 5 harmonica keys will cover most situations: C, D, F, G, A. As your music progresses you will get harmonicas in other keys as well. There are a number of good harmonica books for beginners.