A helpful hint regarding PN...
They really do come in all shapes and
sizes. Some are quite small and bright (like a Uranus or Neptune), others are faint and fuzzy, some are round, some are not, etc... Try to take note of the size before looking. If the PN is a few arc seconds - expect to need some magnification to be able to tell it from surrounding stars. If it is larger (and hence fainter for a similar magnitude), pick a moonless night and low power.
Other than the famous ones (Ring, Dumbell, etc...) I have come to observing PN rather recently, but the variety is amazing!
Using a 9.25" (235mm) SCT from the suburbs, from June until now I have observed the following PN from suburban Canberra:
NGC 5979, NGC 5189, NGC 6302, NGC 2867, NGC 3132, NGC 3242, NGC 4361, NGC 3699, NGC 3918, IC 4406, NGC 5882, NGC 6072, NGC 6153, NGC 6309, NGC 6337, NGC 6445, NGC 6369, IC 4406, NGC 5882, IC 4191, NGC 5189, M57, NGC 6572, NGC 6751.
I have given this list to let you know what a 9.25" is capable of from within town. I hope it helps in choosing some PN for others to tackle!