I would suggest:
- Get a guitar that you think you will like picking up and playing. Whether it's electric, steel string acoustic, classical, or flamenco. Whatever rocks your boat and you like the sound. Have it somewhere where you can just grab it and play a little when you feel like it.
- Learn the basic open chord shapes and some simple songs. Don't worry about flamenco technique for starters.
- Once you have some very basic control of the instrument and you know a few shapes and forms (e.g. 3-6 months) you can pick up some easy tutorials of basic flamenco chord progressions and try those out. You don't need a ton of fancy chords or technique to get some flamenco like sounds out of your instrument.
- You will need to build what people call "facility". This is your ability to move your fingers quickly, put them in the right places, etc. this needs to happen with a combination of drilling and playing progressively harder pieces. I would still say you don't have to aim for super complicated flamenco techniques yet but you can learn something about spanish scales and chord progressions and start experimenting.
- Learning some simple fingerstyle songs/patterns will likely help if you do decide to specialize more in flamenco.
- A teacher will certainly help and may be necessary at some point. Probably a good idea to take some lessons early on just to get corrected on basic mistakes. Then you can go back to playing/practicing on your own and come back again when you feel you need more help.
- A book is really hard to learn from when you don't know anything. Videos are better. But you will need feedback from a person at some point.
- Record yourself playing. Challenge yourself to learn progressively harder pieces (in whatever style).
- Practice with a metronome to improve your sense of time.
- You will need to learn some theory, scales etc.
- You also need to develop your ear. Listen to music and try to figure out notes/chords etc. Sing a tune and try to play it by ear.
It's a journey but it's easy to get to a point where you can play some simple songs and have fun and build from there.