After hearing my wife strum chords, I first got a flamenco guitar and a comprehensive teach yourself book which I can't find (this was from living in Spain and hearing it and fado in Lisboa in 1984.
Soon realised lessons were needed for the technique, it was way beyond adult beginner.
Then inspired by Andrés Segovia and David Qualey playing, I got a classical guitar, and a year later a steel strung parlour size folk style.
Used terrific books by Frederick Noad mostly, Solo Guitar Playing vols 1 & 2.
And attempted some from The Romantic Guitar by Carlos Bonell. And Qualey's music.
I realised two things.
After decades playing piano my fingers bend only like a piano player, guitarists fingers bend the other way too (the way your teacher stops you doing as a child).
Lessons and a lot of concentrated time to learn the various keyboard positions are needed.
I got to chapter 11 in the Noad book, this level:
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