Coding in XHTML using DIVS and CSS are the new web standard. For information on why using DIVS instead of tables is cleaner and more effective and tutorials on how to code using XHTML, visit the following websites.
Nice list. Personally my favourite resource on that list is http://www.w3.org/TR/CSS2/
I found by experimenting and refering to that page when I couldent figure something out was the best way to learn how to code with the new standards and tableless layouts.
I agree Travis. W3 is a great place to use as reference. I coded my first few table-less designs with little to no knowledge but I pieced it all together in my head using the w3 tutorial as a guide.