Luciano De Crescenzo is an Italian writer, director, and actor, and his book "Storia della Filosofia Greca" (History of Greek Philosophy) is a well-known and highly regarded work on the subject. The book offers a comprehensive and engaging overview of the development of Greek philosophy from the Pre-Socratics to the Hellenistic period.
You don't need a degree in Classics. It is specifically written for those who find standard textbooks intimidating.
De Crescenzo applied this engineering mindset to philosophy. He looked at the pre-Socratics—Thales, Anaximander, Heraclitus—and thought, “Why must this be boring? Why must this be dry?”