my skills: Html,CSS,Adobe Photoshop,Corel Draw,Illustrator,PHP and Dreamweaver.

Motto: To be an Advanced Web Designer.

i have heard about Web Designing(not talking about development) in Ruby on Rails using CSS PreProcessor like SASS & Less. i want to ask:

1>> Is this technology is in demand or not in market?

2>> If i want to learn this then what should i do?..i have heard about a book "Agile Web Development with Rails". As the name tells us that this is for development. but is this book can be used for learning web designing in Ruby?

also any other advice is welcome