Still learning to play the autoharp

Several years ago I bought a used Oscar Schmidt autoharp (made in the 1970s) from a local music store and enjoyed trying to teach myself to play it, not realizing that it was too large for me to play effectively. Because I wasn't making much progress and felt discouraged, I stopped playing it.  A friend loaned me a smaller autoharp recently, and I have been practicing again, using the songs with chords from here (scroll down the sidebar on the left).