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Im new too, so perhaps someone can give you a better answer.
In teh System Admin | Preferences | General Settings and , you can set the Module for your start page.
It sounds like you have set that up already.
If you want to show more content on the pages...
Select Admin | Blocks. This will bring up the Blocks Administration page.
From here, you can see each block that is available to any user group. Just find the block you want to see, change it to be "visable" and select a location for that block to appear.
I hope that helps....