The textbook "Soil Mechanics and Foundations" by B.M. Budhu is a comprehensive resource that covers the fundamental principles of soil mechanics and foundation engineering. The book is divided into several chapters, which include:

If you're unable to find a free solution manual through legitimate channels, consider consulting your educational institution's library or bookstore for guidance. They may offer study aids, or your instructors might have recommended resources that can help you understand and apply the concepts from "Soil Mechanics and Foundations" by Mukul Budhu.