You might think Improvisation is too difficult for guitar beginners, but actually it's not. You will be able to improvise a song that you haven't even listened to it before in 10 seconds after you watch this video. You don't need to know the key of the song. No need for a complicated music theories.
I leaned this method from my guitar teacher a few years ago. I don't know how popular this method is, but I was asked from several skilled guitar how I did it.
This method doesn't work well if the key of the song changes in the middle frequently, but other than that, this method should work for most of the songs.
In this video, I only talk about the basic stuff, but even so, it will be fun to play and also it will be an excellent training too.
I hope you enjoy this video!
A website to encourage middle-age guitar beginners.
https://www.over40s-guitar.com/blog/
(Sorry this site is in Japanese only)