If you just want to learn to strum chords, and play a few leads, then why are you learning how to read music?
It's amazing how many guitar teachers, living and working in the 21st century, still force their students to learn staff notation. I'm not against reading music. But for most of my students, it's unnecessary, and it isn't suited to the type of music they're learning, which is usually rock, country, blues or jazz. If you're learning guitar from one of the reading-based lesson books from the major publishers, because you think this is the 'proper' way to learn non-classical guitar styles, then you should take another look.
Even if you're just a beginner, you should think about why you're learning to play, and about what kind of music you want to play, because these questions determine the best approach for you as a student.
As I pointed out in my Youtube video, the fact is that in most rock music, staff notation played no role in the writing or original recording. Outside of metal, most working rock guitarists don't use written music, other than chord charts, to learn or create their parts. In modern-day recording sessions, studio musicians create grooves on the spot, so that every take has its own unique flavor.
If your goal is to be able to join singer/songwriter jams, or even get up on stage with a blues, country or rock band, then reading staff is an unnecessary diversion. It's not going to help you learn to confidently join in a live group, and sound good.
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