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 teaching for seventeen years through different media, and has also worked in media for ten years, producing and presenting programs for several TV channels.
You can try this: https://www.shia-maktab.info/index.php/en/library/books
and this: https://www.shiavault.com/
Generally, if you search using the words Shia online books a few websites should appear - depending on which country you are searching from.