A List Apart Magazine, according to its website, explores the design, development, and meaning of web content with a special focus on web standards and best practices. Its articles discus everything from pixels to prose and coding to content, in each of six categories: code, content, culture, design, process and user science, making it one of the leading sources for web design information on the Web.
SitePoint is an international online media company and information provider targeting the Web professional market, specifically Web Developers and Designers. It covers topics from “before you code” and “design and layout” to Client- and Server-side coding, site strategy and marketing. It also offers a number of reference materials, including references on CSS, HTML and Java script.
W3Schools is a free online resource created to help train web designers and developers. It features tutorials, guides and examples. It includes user content and the best links aggregated from around the web.
jQuery is a quick and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. It is part of the Software Freedom Conservancy, a non-profit dedicated to providing a home for Open Source software. It consists of four units: jQuery Core, jQuery UI, QUnit and Sizzle, all of which are powerful tools for working with Java Script.
jQuery UI provides abstractions for low-level interaction and animation, advanced effects and high-level theme-able widgets. It builds on top of the jQuery JavaScript Library to allow users to build highly interactive Web applications.
Learning jQuery is a multi-author blog providing tutorials, demos, and announcements about jQuery. Tutorials are available for all skill levels, and each entry is categorized by level of difficulty.
jQuery for Designers, as the name implies, is dedicated to explaining jQuery design. It was created to serve the design community and to “bridge the barrier to the funky interaction stuff.” Specifically, its purpose is to teach designers with very little programming experience how to include additional effects within pages and to understand what they are adding.
YSlow analyzes Web page performance by examining all the components on the page, including dynamic components created with JavaScript, and offers suggestions for improving it. Yahoo!’s Exceptional Performance team has found 34 rules that affect Web page performance. YSlow’s analysis considers 22 of these 34 rules, deducting points for each infraction of a rule, then appling a grade to each rule. It provides users with an overall grade and score for the page.
W3validator tests the markup of Web documents, including html and xhtml. It conforms to International Standard ISO/IEC 15445—HyperText Markup Language, and International Standard ISO 8879—Standard Generalized Markup Language (SGML) – which basically means that in addition to W3C recommendations, it can validate according to these ISO standards. You can also validate your css here.