QUOTE(fsharpminor @ Feb 3 2012, 04:25 AM)
The G Minor Op15 No 2 is the easiest of all the Chopin Nocturnes, so more approachable than its predecessor.
Edit ---- Oops sorry thats wrong, the G Minor you have been doing is the easiest one !. But I still say the Op15 No 2 , also G Minor is a good bet to do next.
I think you mean op. 15 no. 3. I'm fairly sure op. 15 no. 2 is in F#. Neither op. 15 no. 1 nor op. 15 no. 2 are easy, but I would guess the latter is slightly easier. The difference isn't significant though, so pick whichever you like best. You might want to try an easier nocturne (op. 32 no. 1, op. 9 no. 1 or 2, any of the posthumous) first though.