Hey CosmicLion, great to hear the guitar is calling you and best of luck on this exciting journey!
It called me 4 years ago in an Ayahuasca ceremony. I had never played an instrument before (although I did love singing). After I came back from that ceremony I bought a guitar.
I took a few private lessons, but my teacher wasn't familiar with medicine music and so when I realized I wasn't getting as much from it as I was hoping, I discontinued them. It was still a useful learning experience.
Youtube is a great resource and it's free.
TGO's post has some good suggestions.
Learn the basics first, the stuff that's pretty universal - chords, strumming and picking patterns, basic music theory, and maybe the notes and scales if you want to learn to improvise, but if you don't have a strong calling for that, then maybe don't spend too much time on scales just yet.
In any case, the basics should keep you busy for a good couple of years :d
Once you've got that covered, you may want to specialize in a particular style or copy (at first) your favorite guitarist - in that case you may want to learn directly from them or by listening to their recordings.
I've also learned a lot by participating in ceremonies and singing circles and hanging around others interested in medicine music. I'm planning on starting a local singing circle.
Psilosopher? said:
LickNRiff (Dude makes it very understandable, and shows really simple ways of improving.)
Seconded this one.
And don't forget to practice regularly, it's not like studying maths or science where theory is all you need. Guitar playing is a real-time, time-critical activity and you need to practice to develop new motor skills and move them from your conscious brain to autopilot. You want to build specialized hardware circuits for those skills... you can't overload your CPU with thinking about your left hand, right hand, tempo, rhythm, chord changes etc. all at the same time
Listening to music is another thing. Since I took up the guitar, my listening has changed. I listen more consciously now, and hear things I didn't hear before. Before, I'd only hear a piece and think it's beautiful, whereas now I zone in on individual instruments and recognize chords, patterns, rhythms.
And last but not least: have fun!
P.S. If you need medicine songs with chords,
Songfisher.org ~ Songs for the Circle is a good starting point if you haven't seen it already.