Offline sources and books play a crucial role in complementing the online study material for the DSSSB TGT/PGT/PRT exam. They provide comprehensive and detailed information, help in revising concepts, and offer additional practice questions. Here are some recommended offline sources and books that can be beneficial for exam preparation:

1. NCERT Textbooks:
- NCERT textbooks are considered the foundation for any competitive exam. They cover the entire syllabus in a clear and concise manner, making it easier to understand the concepts.
- Reading and understanding the NCERT textbooks will help candidates build a strong foundation in the subjects required for the DSSSB exam.

2. DSSSB TGT/PGT/PRT Previous Year Question Papers:
- Previous year question papers are an excellent resource for understanding the exam pattern, the type of questions asked, and the level of difficulty.
- Solving these papers will help candidates identify their strengths and weaknesses, improve time management skills, and gain confidence.

3. DSSSB TGT/PGT/PRT Guide Books:
- Guide books specifically designed for the DSSSB TGT/PGT/PRT exam provide a comprehensive overview of the syllabus and cover all the important topics.
- These books include practice questions, solved examples, and tips and tricks to solve the questions efficiently.
- Some popular guide books for the DSSSB exam are published by Arihant, Disha Publications, and EduRev.

4. General Knowledge Books:
- General knowledge is an important section in the DSSSB exam. Candidates should refer to books that cover a wide range of topics such as current affairs, history, geography, science, and Indian polity.
- Books like Lucent's General Knowledge, Manorama Yearbook, and EduRev's General Knowledge section provide in-depth knowledge and are highly recommended.

5. Subject-specific Books:
- For subject-specific preparation, candidates can refer to books written by renowned authors that cover the entire syllabus in detail.
- Some popular subject-specific books are available for subjects like Mathematics, English, Hindi, Science, Social Science, and Pedagogy.

Remember, while offline sources and books are valuable resources, it is essential to use them in conjunction with the online study material. Online resources provide the latest updates, interactive quizzes, and mock tests, which are equally important for exam preparation. By combining the benefits of both offline and online resources, candidates can enhance their preparation and increase their chances of success in the DSSSB TGT/PGT/PRT exam.