This book, "History of the Ottoman Empire Series, Volume 1/2," by the distinguished historian Ahmet Şimşirgil, offers an insightful and comprehensive exploration into the foundational years of the illustrious Ottoman Empire. This initial volume delves into the origins, early expansion, and the significant rulers who shaped the nascent state. Readers will gain a deeper understanding of the political, social, and cultural dynamics that characterized this pivotal period, setting the stage for one of the world's most enduring and influential empires. Şimşirgil's meticulous research and engaging narrative make this an essential read for anyone interested in Ottoman history, providing a vital first step in a detailed historical journey.