The Pentatonic Scales "Penta meaning 5 in Greek" are basic versions of the major and minor scales. The Major and Minor Scales have 7 notes and the pentatonic scales only have 5 excluding the 4 and 7th tone in major and the 2 and 6th tone in minor(natural minor). Minor Pentatonics are used relentlessly in Blues and Rock music among others styles.
Once learn the five minor forms you can play them in all keys. We will focus only on the minor pentatonic forms for now but will dedicate another file just for the major pentatonic. NOTE: The notes in bold are the root notes. See the attachments below for each pattern.