Our first challenge was to make the project open source and free for all,so selecting an open source model other than chat gpt api we need to have similar performing model which is also free of cost. Selecting as many as book possible which are available in pdf format in the internet for free was also a challenge. We used streamlit for app interface but linking with different app components and handling multiapp was not so easy as it's backend is not much customizable (until now) though it provided a great interface for us to start with. And finally due to hardware limitations it takes time to load novels with more pages.