Web standards are important, and getting moreso every day. Tables for layout are out. There are many reasons to learn web standards and code your sites to adhere to them as much as you can. You don't have to become a 'standardista', but learning and coding for web standards will help you - and your clients. Yes, there's a learning curve, but a good web master never stops learning
Here is a list of some resources for learning about Web Standards and why they are important.
http://www.webstandards.org/learn/
http://www.456bereastreet.com/lab/de...web_standards/
http://www.maxdesign.com.au/presentation/checklist.htm
http://www.zeldman.com/ - Jeff Zeldman, Standards guru
Designing With Web Standards, 2nd edition, by Jeffrey Zeldman
http://www.zeldman.com/dwws/
http://www.sitepoint.com/article/imp...-web-standards
Why should you bother ?? There are good business reasons:
http://www.adaptivepath.com/publicat...ves/000266.php
http://www.maxdesign.com.au/presentation/benefits/
http://www.maccaws.org/kit/primer/
Along with Web Standards, you have to also grasp Usability and Accessibility (it's not JUST about the blind !)
http://www.webcredible.co.uk/
More about Web Standards, Validation and Accessibility
http://www.alistapart.com/articles/w...dardswentwrong