The most Common and easy to play rhythm is a very simple thing called the 12 bar blues. So I'll keep it simple so you can get on with making music. I'll be giving my recommendation for that sort of thing later on. So if you care to go on and learn, by all means I encourage it. There are far better people out there to teach music theory than me.
I'm simply going to show you where to find the chords that you need. Just to keep it simple, I'm not even going to explain how to figure out what the chords are. The 1, 4, 5 are just the chords based on the notes of any major scale that come first, fourth and fifth.
I could go into a long explanation of what I mean by that, but I'm going to keep this simple so you can see results fast. S o which chords are the blues guitar chords? Ever heard of the 12 bar blues? Sound complicated? It's not really, actually its as easy as 1, 4, 5. The 12 bar blues - Blues guitar chords made simple.