I want to learn more about Saudi Arabia...

For someone from a "western" background this will mean understanding a whole lot of new approaches.

Religion

Understand the relationships between Judaism, Christianity and Islam.
Understand the view of each religion to each of the other religions.
Understand the Saudi view of animistic religions, like Hinduism and Bhuddism.
Understand the devotion to prayer, the 5 prayer calls a day.
Understand the status of the Koran as the final holy word.
Understand the Sunni and Shia interpretations of Islam.
Understand the food preparation process, halal.
Understand the "pillars of Islam".
Understand the role of the Haj pilgrimmage.
Understand the role of fasting and the holy month of Ramadan.
Understand the role of the Kaba.

History

Understand the rapid spread of Islam 1420 years ago.
Understand the developments in science and medicine in the arab world 1000 years ago.
Understand the background and outcomes of the Western "crusades" 800 years ago.
Understand the growth and decline of the Ottoman empire.
Understand the rise of the house of Saud over the last 250 years.
Understand the conflict between the British and the Germans in the first world war and the effect on politics in the Arabian peninsular.
Understand the relationship between Saudi Arabia and the USA since 1930 and the discovery of oil.
Understand the collapse of order in the Palestinian lands between 1920 and 1946 and the background to the creation of the state of Israel.
Understand the development of pan-arab nationalism since 1946.
Understand the role of the USA in Iran and the Shah's regime before the revolution in 1979.

Economy

Understand the role of oil in the world economy.
Understand the massive population growth over the last 50 years.
Understand the role of expatriate labour.
Understand the role of Saudi Arabia as keeper of the holy cities of Makkah and Medinah.