About
If you want to learn the basics of guitar, there are many free guitar lessons available on the internet. Some are in video format or may be audio and also in many different text forms.
I personally think that video lessons with some sort of instructional text are best.
When I was younger and trying to learn how to play guitar, it would have been a huge help to simply watch a video showing note for note how to play a song.
In my early days of guitar playing, I had to learn from a friend who played guitar. He would teach me all the songs he knew and then we would get together with our friends and share our knowledge but in most cases, it was very limited.
I had to learn most of my songs by ear, listening intently to every guitar note on the record album or trying and catch a song as it played on the radio. It was always a challenge trying to find all the notes on the neck.