I WOULD have emailed you about 50 pages of notes I had!! But due to recent events (um... english exam) I have taken the liberty of burning everything to do with the subject of English as it was by SO FAR my worst subject it's not funny.
I did well in the Road Not Taken analysis, tho... I said basically it is about the choices one makes during their life journey, and how the difference of choice leads to either a difficult or simple life journey, but the more difficult one benefits greatly in the end ("and that has made all the difference").
You can also talk about the autumn- coloured imagery ("yellow wood"; "leaves" etc) and how this is relative to the season of change, also reinforcing what the main idea is about choices whilst on a journey.
Note also the title "The Road NOT Taken" - sense of nostalgia ("with a sigh") relates to the wish of the persona that he could "travel both", but because he could not, he spends the rest of his days contemplating what was down the other path.