All books are updated, divided into 4 categories: science, humanities, commerce, olympiad. Website debugged and fixed any errors present. Added sign in and sign up option, linked it with firebase. Version 1 is complete.  I would like to work on these features in version 2: google sign in through firebase, phone sign in through firebase, complete profile with details and info, sms verification through firebase, audiobooks.  Hope you like the project and also support it. G.