If you look across the top of the www.apsim.info homepage you will see:
Home -> News, Training and Release Dates.
APSIM -> Downloads, Release Notes, Scientific Documentation, Model Performance, Licencing of Apsim.
Other Products -> this contains information and downloads for other helpful products that can be used with APSIM or use APSIM that might be of interest to you. Of particular interst is the APSoil database. This is a database of APSIM soils that you may find useful for choosing a soil in your particular region. There is even a tool that will allow you to view all the soil locations in Google Earth. Click the following link for a demonstration APSoil database in Google Earth.
Publications -> A list of scientific publications surrounding APSIM.
Source -> This is the source code for APSIM. APSIM has gone open source, so now you can get hold of the computer code that is used to create APSIM.
Tasks -> A link to the Bug Tracking or Feature Requesting website for APSIM. This website allows you to submit bugs or feature requests for APSIM. For more information click here