Yes, there is a book that provides guidance for the descriptive section of the SBI PO Exam:

The descriptive section of the SBI PO Exam requires candidates to write essays, letters, and paragraphs to test their English language skills. To prepare for this section, a book called "Descriptive English" by S.P. Bakshi and Richa Sharma is highly recommended. This book is specifically designed to help candidates improve their writing skills and excel in the descriptive section of the SBI PO Exam.

Key Features of the Book:

1. Comprehensive Coverage: The book covers various topics that are commonly asked in the descriptive section, such as essays on social issues, current affairs, banking, and economic issues. It also includes sample letters and paragraphs to practice.

2. Explanation and Tips: The book provides detailed explanations of different types of essays, letters, and paragraphs. It offers valuable tips and strategies to enhance writing skills, including effective sentence formation, paragraph structure, and vocabulary usage.

3. Practice Exercises: The book contains numerous practice exercises with model answers to help candidates understand the format, style, and content required for different types of questions. These exercises provide an opportunity for self-assessment and improvement.

4. Sample Essays and Letters: The book includes a wide range of sample essays and letters on various topics. These samples serve as a reference point for candidates to understand the writing style and content expected in the exam.

5. Grammar and Vocabulary: The book also covers essential grammar rules, vocabulary, and idioms commonly used in descriptive writing. This helps candidates enhance their language skills and write effectively in the exam.

6. Previous Years' Questions: The book includes previous years' descriptive questions asked in the SBI PO Exam. This allows candidates to get familiar with the exam pattern and practice accordingly.

7. Time Management Strategies: The book provides valuable tips on time management during the exam. It suggests techniques to plan and organize writing tasks within the given time limit.

In conclusion, "Descriptive English" by S.P. Bakshi and Richa Sharma is a comprehensive guidebook that provides guidance and practice for the descriptive section of the SBI PO Exam. It covers a wide range of topics, offers detailed explanations, and includes practice exercises to help candidates improve their writing skills and excel in the exam.