• This link has many Stotras and Slokas related to Shiva

https://greenmesg.org/stotras/shiva/

• This book is like an Encyclopedia on Shiva - "The Presence of Siva" by Stella Kramrisch

https://www.amazon.in/Presence-Siva-Stella-Kramrisch/dp/8120804910

• This book contains great sculpture and images related to Shiva with detailed explanations - "Manifestations of Shiva" by Stella Kramrisch

https://archive.org/details/manifestationsof00kram

• This book has many stotras and prayers related to Shiva - "Lord Siva and his Worship" by Swami Sivananda

https://archive.org/details/in.ernet.dli.2015.90344/mode/2up

• This book has some great insights into Shiva's personality - "Shiva: The Wild God Of Power And Ecstasy " by Wolf-Dieter Storl Ph.D.

https://www.amazon.in/Shiva-Wild-God-Power-Ecstasy/dp/159477014X