We both play melodeons, and have great fun doing so, but we often see instruments bought by people who want the fun but find that there is a fair amount of effort to put in before they enjoy playing themselves. Instruments get bought, a week of trying, and then instruments shelved.
This need not be the case. Melodeons are meant to be easy to play to get a decent tune out of and that's what this section is about, play in an hour tunes.
For real learning however, we recommend these as good starter books to add to getting personal tuition by the great player Ed Rennie.