I think you should take Kiran's Telangana General Studies Book - 2185 for preparing for the Telagana VRO exam.

It is the best book in least cost and I think it would help you a lot.

It is been segregated by chapters and many objective type questions are also available in the book.

The contents of book are :-

Unit I : Socio-Cultural History of Telangana and Formation of Telangana State

1. Telangana History in a Nutshell

2. History of Telangana

3. Kakatiya Kingdom

4. Qutubshahis

5. Asaf Jahis Dynasty

6. Socio Culture and Political Awakening in Telangana

7. Integration of Hyderabad State into Indian Union and Formation of Andhra Pradesh

8. To the Point : History of Telangana

9. Exercise

10. Question Bank : Questions Asked in Previous Year’s Exams

Unit II : Indian Social Structure and Society, Culture, Heritage, Arts and Literature of Telangana

1. Caste in Telangana

2. Kinship and Marriage in Telangana

3. Tribes of Telangana

4. Women and Women’s Welfare in Telangana

5. Women in Telangana Movement

6. Religion

7. Culture in Telangana

8. Social Issues in Telangana

9. To the Point : Society Polity and Culture of Telangana

10. Exercise

11. Question Bank : Questions Asked in Previous Year’s Exams

UNIT–III : Economy and Geography of Telangana

1. Water Deprivation, Bachawat Committee

2. Land Reforms in` Telangana

3. Agriculture and Allied Sectors

4. Industry and Service Sectors

5. Industrial Policy of Telangana State

6. To the Point : Geography and Economy of Telangana.......

7. Exercise

8. Question Bank : Questions Asked in Previous Year’s Exams

UNIT–IV : 31 District of Telangana

1. Adilabad

2. Bhadradri-Kothagudem

3. Hyderabad

4. Jagitial

5. Jangaon

6. Jayashankar-Bhupalpalli

7. Jogulamba-Gadwal

8. Kamareddy

9. Karimnagar

10. Khammam

11. Komaram Bheem Asifabad

12. Mahabubabad

13. Mahabubnagar

14. Mancherial

15. Medak

16. Medchal-Malkajgiri

17. Nagarkurnool

18. Nalgonda

19. Nirmal

20. Nizamabad

21. Peddapalli

22. Rajanna-Siricilla

23. Rangareddy

24. Sangareddy

25. Siddipet

26. Suryapet

27. Vikarabad

28. Wanaparthy

29. Warangal (Rural)

30. Warangal (Urban)

31. Yadadri - Bhongir

I hope this book helps you out.

Thank you