basic idea of smalltalk

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basic idea of smalltalk

hello20009876
Hi all,
I am a C++ & java programmer and prepare to learn smalltalk, I have seveal basic questions to ask:

1. is smalltalk platform independent (similar to java)?
2. is smalltalk a server or client language from web-site view (such as php or html code)?
3. does it reqire software installation to run (such as jre and jdk in java)?
4. what is main purpose of smalltalk? is it similar to C++ to develop independent applications, or JavaScript used for web-pages, or java embeded "applet" on web-pages? or others?

thanks