euh, not to be a pain. . although Mars is visible quit often. Usually planets are near the horizon. [ for us in The Netherlands ]. As they are on the same euh. . equatorial degree to the Sun as Earth is. . .so will most likly be around our equator. Mars can be identified quit easy, just like Sirius is the brightests star on the Northern Hemesphere, Mars won't give light itself but is reflecting it. . .making it not a shining dot although more a round dot in the sky. And last but not least. . . it's a little bit red .. . .
Venus however is a little harder to spot. As it is so closed to the Sun it will only be visible for "amateurs" just before or after Sun rise and Sun set. Els it's bound to be behind the sun or being overpower in light by it.
Neptune is quit hard to spot, so is Pluto and I havn't seen Uranus more then 6 time I think .. . . . . Saturnus ofcourse still is the most populair one to look at.
