Musical notes in the Western World are the same on any instrument. Here’s a 5 minute video showing you the notes on the piano, solfege, & guitar. You will learn what a movable ‘Do’ is and why the notes have different names in different countries. Solfege is the term for ‘Do Re Mi,’ etc.
The video starts with a piano, then shifts to applying what you learned to the guitar. You should be able to figure out any note on the guitar. To master the notes, it’s easier to learn a few at a time. I like Frederick Noad’s ‘Solo Guitar Playing.’
He was one of my teachers and I learned classical guitar from this book. It’s available in most music stores and I’ll put it on my site too. If you want to learn the notes, I would expect it to take about a year and you’ll be able to read music up and down the neck of the guitar.