The convenience of your own bed and kitchen make it worth while to understand what can be seen from the city. It is best to start out by shielding yourself as much as possible from the lights around you. This will help your eyes to stay a little more dark adapted and keep a stray reflection from entering the instrument you are looking through. Obviously, the moon do not pose a problem in the city. In fact, the moon can be so bright that you may want to use a filter, or obstruct the telescope, so that it is a little easier to look at.
Planets are great city targets.
Double stars can keep you entertained for hours. Bright open clusters, like the double cluster, are another good target group. Bright nebulas like the ring and Orion nebulas are good targets, but nebulas along with galaxies and globular clusters are seen much better under dark skies. The sky map in Sky and Telescope seems to be structured for viewing in the suburbs so it is a good reference for your observing session. Comet Observing I am willing to bet that one reason you are reading this is that comets Hyakutake or Hale-Bopp has sparked an interest in astronomy within you.