Lacking Information
I am trying to learn web programming. W3 schools seems an outstanding source and I have been studying from there with success. When looking at the HTML code for any of the challenges, I see code that does not seem to follow any conventions or is not referenced or listed anywhere that I can find. An example of this would be a <link rel='icon' …. statement. "icon" is not a valid value for the "rel" attribute of the link statement in any documentation I can find. I also see ".main-text" and other references similar to this that also cannot be found on the W3 school site. I am obviously new to this and am missing something! Any advice on what sites besides W3 will give me a more complete reference to web programming would be greatly appreciated.