|No such thing as a small change|
In addition to the many good suggestions above, I would recommend looking at the following two books:
Beyond this, I've personally been experimenting recently with "test-driven development". While I'm not fully "extreme", the process of writing a test first forces me to think about how a user uses interfaces prior to coding. It's led to some streamlined code and really avoided overbuilding. I suggest doing some research and trying it out.
As an additional suggestion, unless you have a great local bookstore, I've found O'Reilly's Safari electronic bookshelf to be a great resource for browsing books to get a sense for styles and design methods.
Best of luck to you
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In reply to Re: Software design -- The confussion of buzzwords