The book is a ‘Custom-made’ primarily for the undergraduate students of Earth Sciences (Geology and Geophysics) in universities and colleges. It is also recommended as a side textbook for the undergraduate level courses in Agriculture, Archaeology, Civil Engineering, Defense Sciences, Forestry, Geography, Hydrology, Mining Engineering, Surveying, Space Sciences and Town Planning etc. Beginners in Computer Science may also benefit from it. The book may also be used as a manual for conducting workshops to give training in these fields. Chapter 1 is about Remote Sensing, Chapters 2 to 9 are about Aerial Photography, Chapters 10 to 13 deal with Earth Sciences disciplines whereas Chapter 14 and 15 are about Digital Image Processing and GIS respectively. The book includes exercises and worksheets at the end of the chapters, and is therefore a textbook, exercise-book and workbook at the same time.