Rebecca Masterton, Dr Rebecca Masterton graduated with a BA in Japanese Language and Literature; an MA in Comparative East Asian and African Literature and a PhD in Islamic literature of West Africa. She has been... Answered 2 months ago

You can try this: https://www.shia-maktab.info/index.php/en/library/books

and this: https://www.shiavault.com/

and this https://www.hubeali.com/online-books/

Generally, if you search using the words Shia online books a few websites should appear - depending on which country you are searching from.