1. Read Douglas Crockford's Javascript: The Good Parts (Alternatively you can watch his lectures on Yahoo Theater)
2. Read Nicholas Zakas' Maintainable Javascript and Scalable Javascript.
Trust be both these books will make a great difference to the way you write your javascript code.
The next step should be to contribute to some open source JS frameworks. I will suggest jQuery or YUI. You need not always write code, you can begin with improvements to the documentation and later move on to submitting actual code.
Comments
Three simple steps.
1. Read Douglas Crockford's Javascript: The Good Parts (Alternatively you can watch his lectures on Yahoo Theater)
2. Read Nicholas Zakas' Maintainable Javascript and Scalable Javascript.
Trust be both these books will make a great difference to the way you write your javascript code.
The next step should be to contribute to some open source JS frameworks. I will suggest jQuery or YUI. You need not always write code, you can begin with improvements to the documentation and later move on to submitting actual code.