None whatsoever. This is the worst thing about Smalltalk (with the exception of the open-source ones) - there is almost no useful documentation freely available

None whatsoever. This is the worst thing about Smalltalk (with the exception of the open-source ones) - there is almost no useful documentation freely available. I was forced to buy "Mastering ENVY/Developer" by Pelrine, Knight and Cho. It is well worth the money though.