If you want to learn more about the HTTP routes, refer to the following points:

• Odoo's custom converters are defined in ir_http.py in the base module and registered in the _get_converters class method of ir.http. As an exercise, you can create your own converter, which allows you to visit the /my_library/book_details/Odoo+cookbook page to receive the details of this book (if you added it to your library earlier).
• If you want to learn more about the form submission on the route, refer to the Getting input from users recipe from Chapter 15, CMS Website Development.