The Tablature (TAB) below the music notation is quite straight forward. This series of lessons from Chris has more detail on how to read it.

https://www.guitartricks.com/lesson.php?input=16478&s_id=1218

Chris's lesson explains what the numbers stacked on top of each other means.

They put both types of notation up. Don't worry about the top one unless you really want a challenge 🙂. GT have lessons on reading musical notation but that's advanced stuff.