This fourth edition book has been further modified in April 2021. It describes the concepts of Veerashaivism in six main sections: Shivāgama, Siddhānta Shikhāmaṇi, Śrīkarabhāshya, Vachana, Shūnya Sampādane, and the Philosophy and practice of Veerashaivas.The practicing part of the Veerashaivas is accepted and is well documented. But there is some controversy in naming its philosophy. The philosophy has been called Shivādvaita, Vishēshādvaita, Liṅgādvaita, and other names. There is a detailed discussion of the Philosophy of the Veerashaivas. This book is a great asset to those wishing to understand the Veerashaiva religious philosophy and its practice. It is highly informative on the basic tenets as well as some advanced information on Veerashaivism. Every English speaking Veerashaiva should have this book.