At concertina we are always to help to those who are willingly want to learn and passionate about it. A concertina is a bellows-driven free-reed musical instrument. So is an accordion, but there are differences. There are also different major and minor classifications of concertina.
The principal difference between concertinas and accordions is that accordions have keys or buttons which sound entire chords, while on a concertina each button sounds a single note of the scale. Concertinas are generally designed to be hand-held, while accordions are usually supported by the upper body through some sort of harness or straps. Also, the keyboards on both sides of a concertina face outward from the sides; on an accordion the bass/chord (left hand) buttons may be oriented similarly, but the melody (right hand) buttons or keys face forward away from the player.