Roger Watson published a starter book here in the UK. Mallinson'd Music or Hobgoblin or the Music Room have website and might still sell it. I point to Hobgoblin from my site at cresby.com.
Good luck I too have one of the Chinese onerows in C. AND it is red. 'twas a b'day present from Miss Red. The Xmas version was a departure - that had nothing to do with the learning process.