In past years I have learned the most important languages for web development (CSS, HTML, JS, PHP) and I can create good-structured sites. But an important part of web design is the **images** used for buttons, backgrounds, text, gradients... Also the main logo is a very important element in the layout of a website. However, I dont know how to get started in that side of web design for developing good looking websites. What tools should use for that purposes? Do you know good guides? I have read one books and some guides about photoshop, but they are about graphics design in general and I am looking for a guide/books focused on **web** graphic design and also (if posible), focused on **how** to place these images correctly using css and xhtml. PD: Sorry for the bad English. Thanks!