I would recommend going to your local library or bookstore, sit down with a few books and read a couple chapters from each... pick the two that you understand the most and take em home. Most books give you a step by step guide.. follow along... it will help you remember the syntax if you are actually writing it. Always write everything out line by line.. avoid copy & paste stuff until you know what you are doing.
If you have any questions.. just ask here on the forums.. there are a lot of CSS gurus who can help you out.
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A foolish consistency is the hobgoblin of little minds
Thought for today:- I SEO the only industry where all the cowboys are Indians?