I just ordered my first concertina yesterday of eBay. It's a 30-key Anglo. If I'm just starting is it bad to start with a 30-key? And also, are there any books for the 30-key concertina. I know eBay probably wasn't a good place to get the instrument but it was inexpensive so I said to myself, "If the price is that low, I might as well get it." Did I make a mistake?