Hi! I'm also new to the pentatonic scales and am sure many will be glad to help you with this. The way I understand it, the R (root note) is the location of the root note. For example, for an
A minor pentatonic scale, R will be on the 5th fret of the low E string. So you will be playing on the 5th to 8th frets. Start by picking your #1 finger at the 5th fret, followed by #4 finger at the 8th fret, then change string, #1 finger on 5th fret, #3 finger on 7th fret, and so on.
That is only for a single position of an A minor penta scale and there are still a lot but the trend goes like that.
Hope this helps a little.
