Dennis,
I would recommend Ivan Tomek's <a href="http://www.iam.unibe.ch/%7Educasse/FreeBooks/Joy/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">The Joy Of Smalltalk as a complete and deep introduction to the world of Smalltalk.
There are also some very goods practical courses from the
San Diego University written by Roger Whitney:
<a href="http://www.eli.sdsu.edu/courses/fall03/cs535/notes/index.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.eli.sdsu.edu/courses/fall03/cs535/notes/index.html
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Felix Madrid
+49 (0160) 6436946
Cleebronner Straße 34 (2)
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Deutschland