This document has been moved to the OFBiz website:

http://ofbiz.apache.org/apache-ofbiz-getting-started.html

You will also find useful links to documentation here:

http://ofbiz.apache.org/documentation.html

And a Chinese version of the document is here:

https://cwiki.apache.org/confluence/display/OFBIZ/Chinese+-+Apache+OFBiz+Getting+Started