Is there any relation with ruby on rails and HTML or CSS? and should i know them to use RoR?
Short answers, yes, and yes. RoR is Ruby embedded in HTML, a close parallel of PHP. The more you understand HTML and CSS, the more you can do. Document creation is at the heart of it. Knowing how to write well formed and valid HTML is a core skill, and knowing how to style its presentation is an art form in itself. If you are not strong in HTML/CSS, hold off going down the RoR road.
thank you! you've been so helpful .