Is the digital library of IIT-Kharagpur easy to use?

The digital library of IIT Kharagpur is having a huge collection of e-documents and most of them are pertaining to the academic knowledge, journals, abstracts, conference proceedings, project work, PhD thesis, research papers, reports, databases etc.
The students, staff, and alumini who are having a valid IIT-K email ID only can login in the system and access those huge resources.
They have also developed an institutional digital repository system using open source software DSpace, which preserves the institute's intellectual output for campus wide access.

I think you are asking about National Digital Library of India. This project is developed by Indian Institute of Technology, Khargapur. (IIT KGP). This is a national mission on education through information and technology (NMEICT) Project. This project is under Ministry of Education, Government of India on 19th June 2018.
This library is providing resources for learning. The very purpose is to make e learning and education available to all from India and the world.This library of India was opened by Hon'ble Minister of HRD, Prakash Javadekar on
Question Wise answers for your questions.
a) I have not used this library. But I know about it and a friend of mine who is a professor in a State University, Karnataka told me about it. He is using and says it is useful to him.
b) This library consists of books, audio books along with important video lectures and presentations. Students can access lecture notes, question papers and solutions. The resources will be useful to students of primary to postgraduate levels.
c) I am not aware of the problems in using this site. But as per the information given by my friend there are no difficulties in using this. You can contact the concerned as per the contact details given below.
Phone: +91-3222-282435
FAX: +91-3222-282431
e-mail: ndl-support@iitkgp.ac.in

Ministry of Education has started National Digital Library project to establish a framework of virtual repository project of learning contents with a single window mechanism. It has been developed by IIT Kharagpur.
The following are the salient features of the library-
1) It has been designed to benefit to all students covering all levels, teachers, researchers, librarians, professionals etc to update their knowledge through the digitalised process.
2) Information can be personalised covering numerous resources for which the learners have their inclinations. This is a customised service provided in a 24*7 integrated environment.
3) It comprises multiple subject domain like Technology, Science, Humanity, Agriculture and lot more to enrich their knowledge in their chosen areas.
4) There are abundant learning resources from books, articles, manuscripts, videos, lectures, thesis etc for the accessibility of the learners.
5) The contents are available in more than 400 languages.

IIT Kharagpur digital library is widely used by students, researchers, and faculty members from IIT-Kharagpur and other institutions. The library is accessible to everyone with an internet connection, and the registration process is straightforward.

The digital library contains a vast collection of books, journals, research papers, and other academic resources. While the majority of books are academic in nature, there are also non-academic books, such as literature, history, and biographies available. Additionally, the library has a collection of rare and out-of-print books, which may be challenging to find elsewhere.

The IIT Kharagpur digital library is user-friendly, and the search function is easy to use. The website has a clean interface, and users can search for books using keywords, author names, or book titles. The library also offers various features like advanced search, citation download, and access to online journals.

However, some users may face difficulties accessing the library due to slow internet speed or technical issues. In such cases, the user support team of the library can be contacted for assistance.

Overall, the IIT Kharagpur digital library is an excellent resource for academic and research purposes, and its user-friendly interface and vast collection of books make it a valuable tool for students, researchers, and faculty members.