Rajasthan literally derives from the Hindustani words meaning "Land of Kings". The state is home to the Thar Desert, a large dry desert that has a wide variety of plants, animals and birds. Part of the Thar Desert is protected and contained in the Desert National Park.
Most people speak Rajasthani dialects, Hindi and sometimes broken English. In tourist places like Jaipur and Jodhpur, you will find trained English, German and French guides too. You may not be able to understand some people due to the dialect that they speak and at times, they may add words from these dialects while speaking Hindi. This does not mean that they are unable to understand you. In Rajasthan, Hindi is universally understood whereas English is spoken among the educated. Bear in mind that Rajasthani languages are more likely to be spoken by older people rather than younger people.