I want to teach myself to play acoustic guitar. Where should I start? I've heard about reading beginner books, youtube, some websites.?

Also what are some things I should really look out for? I heard I need to know how to tune my guitar, I need a guitar with the right neck size for me, I'll need extra strings, and all kinds of things. Now I'm a bit confused with what I'll actually need. And no I can't get lessons I have to teach myself. show more Also what are some things I should really look out for? I heard I need to know how to tune my guitar, I need a guitar with the right neck size for me, I'll need extra strings, and all kinds of things. Now I'm a bit confused with what I'll actually need. And no I can't get lessons I have to teach myself.
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