Spiffy Corners is an amazing tool to generate rounded borders. It generates the CSS and HTML button so you won’t have to deal with any type of code.
Source: IsoPixel

This is an simple technique that can be developed by everybody. Just answer the following questions.
Does the website work perfectly if you turn off the CSS?
Does the website work perfectly if you disable the JavaScript?
Does the website was diagram with tables instate of using CSS?
Is all the essential information in HTML?
If the site have [...]

Thanks to unjimpe we have this tutorial, of how to get rid of contours in CSS.
The contours are dotted lines that appear when you have selected links, these contours are shown around the links to highlight and indicate that the link has the focus. These contours can be controlled with styles through the outline property.

This [...]

Mashable presents an interesting list with more than 50 resources for web designers. This list is divided in 4 categories: Beginner Resources, Resources for more Advanced Users, Graphic and Design Tools, and Inspiration / Collaboration / Other Resources.Its a completed list, and I am pretty sure that you’ll be able to learn a lot.

Colors Lovers is presenting a very long list of colors with it’s colors in respective hexadecimal codes, which can be used for both HTML or CSS.
Source: Excentris

Test everything is a project developed by Jonas John, in which you’ll be able to check if your:

CSS and HTML;
SEO;
Social services;
Web tools;
Image tools;
and many more things.

are all working properly.
Source: Pixelco.us

Criterion has develop and excellent tutorial in which we are going to be able to learn more about HMTL and CSS. It will wok perfectly to those who are just starting in the world of the Web Design. Although it is true that you might not be programming all day long, at lease you need [...]

Thanks to Vecindad Gráfica I was able to find a very large list of menus made with CSS. You’ll find something you’ll love for sure.

11 CSS navigation menus
12 more CSS Navigation Menus
14 Free Vertical CSS Menus
2-level horizontal navigation
Absolute Lists: Alternatives to Divs
Accessible Image-Tab Rollovers
ADxMenu
A drop-down theme
Bookend Lists: Using CSS to Float a Masthead
Bulletproof Slants
Centered Tabs [...]

Rudeworks.com is presenting the default CSS template so we can really start from scracht our Web Site design.
Source: Criterion

Illasaron.com is nice web site in which you are going o be able to find Video Tutorials of: PHP, Action Script, Dreamweaver, Photoshop, XHTML,. CSS, etc. And the best, they are free