As another new Telescope User who has recently faced the same
question, I'll tell you what I did.

First, going to the Astronomical League page as suggested is an
excellent start. That is exactly what I did and it is probably the
second best decision I made. I would start with the Double Star list,
the Messier List, the Lunar List, and the Urban Club List. There is
some duplication between the groups, that that gets you several
hundred targets right off the bat.

The first best decision I made was joining a local Astronomy Club. If
you do, there will always be people around to help you out and provide
ideas for observing.

Finally, I'd go to a bookstore and browse the astronomy section. My
preference is to work off old fashoined paper star charts and most
bookstores will have some kind of a selection of charts and/or books
with charts in them. As a quick tool, I've found that something as
simple as a "Field Guide" to the stars (there are several published)
provides some ideas as well as fun background information about the
objects being observed.

Clear, Dark Skies

Mark