1. Single string arpeggio style stroke. For this style you will pick in order; 3rd, 2nd, 1st strings with a DOWN stroke each, then again, the 1st string with an UP stroke. Total of 4 strokes.
Listen to the audio file. Now try it out. practice this while holding any chord you like, until you feel comfortable doing it, Then, try playing it while changing from one chord to another. It doesn't matter which chords you use. Pick chords that you find are easy for you. I'm using the"C" chord near the nut on my 1915 Fairbanks by Vega, Tu-ba-phone Plectrum Banjo with a calf skin banjo head. Tuned CGBD..