if you want to play - "rock/pop" music and you are just learning start on an acoustic - (different then classical) - if you want to do theory and latin style guitar go for a classical --- and if you want to do electric - do not start out on an electric --- its too expensive to learn on an electric ...
the main different types of guitars
classical - has nylon strings (easier on your fingers when you first start - but not the right sound for most music)
acoustic -(you see these when they are not using an electric) they have 6 steel strings and the sound is amazing depending on the brand, model, and guitar (this type of guitar is also availible in a 12 string version)
electric - The strings do not make very much noise at all - the strings vibrate and the sound from the vibrations is picked up through a microphone and transmitted to the speakers - more expensive because not only do you have to buy the guitar but also a speaker....
pictures of the different types
Classical
Acoustic
Electric
Ps- they sell very cheap acoustic and electric starter kits at places like walmart - not great quality but under $100 if you want to just try it out...
