Unfortunately, I cannot provide you with a video for "Ancient History" by R.S. Sharma as I am a text-based AI and cannot access or provide video content. However, you may be able to find videos related to this topic on online platforms such as YouTube or educational websites.

Regarding famous books for the UPSC exam, here is a list of some important books that are often recommended for UPSC exam preparation:

1. "Indian Polity" by M. Laxmikanth
2. "Indian Economy" by Ramesh Singh
3. "Modern India" by Bipan Chandra
4. "India's Struggle for Independence" by Bipan Chandra
5. "A Brief History of Modern India" by Spectrum Publications
6. "Geography of India" by Majid Husain
7. "Indian Art and Culture" by Nitin Singhania
8. "Environment and Ecology" by Majid Husain
9. "General Studies Paper-1 Manual" by MHE
10. "General Studies Paper-2 Manual" by MHE

These books cover various important subjects required for the UPSC exam preparation. Additionally, it is important to refer to current affairs magazines and newspapers for staying updated on current events and issues.