Modding Refereneces
0. Official
1. Tutorials
RoboMat's Modding Tutorials
http://theindiestone.com/forums/index.php/topic/61-robomats-modding-tutorials-updated-12112013/
http://theindiestone.com/forums/index.php/topic/61-robomats-modding-tutorials-updated-12112013/
2. Java Class Hierarchy
Item Container
http://theindiestone.com/zomboidjavadocs/zombie/inventory/ItemContainer.html#AddItem(java.lang.String)
http://theindiestone.com/zomboidjavadocs/zombie/inventory/ItemContainer.html#AddItem(java.lang.String)
3. Wiki
4. Lua Reference Manual