Masada is one of the most important historical sites for Jews in Israel. It is the place where the Macabees stood up to the Romans in 70 AD. A small group of Jewish zealots held out against the Roman army during a brutal siege. In the end, the Romans claimed Masada after the Jewish population committed suicide.
Getting to Masada is easy - tour buses run frequently from Jerusalem. If you have a car, you will see signs on 40 for the turn off near Zohar. There is a visitor''s center at the base of the mountain which features exhibits of archaeological discoveries, a gift shop, and snack bar, and shows a short movie. From here you can either take the cable car (60NIS both ways) or take the snake path (20NIS).
At the top of the mountain, there are numerous signs giving details of the major buildings, as well as a path to follow. A brochure will be provided (unless you climb in the dark) to allow you to follow along. There are also restroom facilities, a souvenir shop, and a pay phone on top of the mountain.
Allocate at least an hour and a half on top of the mountain to take in the view and all the sites. Bring plenty of water, especially in summer when it gets unbearably hot. There are a certain amount of stairs necessary to see all of Masada, even if you take the cable car. Also be aware that the cable cars only run once an hour during the slow season.