So I have been trying to create a configuration file, but I have never done it, so I have also not been able to find any good tutorials anywhere. I was wondering how to create one.

@EventHandler
    public void preInit(FMLPreInitializationEvent event) {
    	config = new Configuration(event.getSuggestedConfigurationFile());
    	config.getWhatever("name","category", defaultValue);

 

Real fuckin' easy.

 

Also, block and item IDs don't exist any more.

so if it doesn't exist anymore then whats the point of item and block ID's as they do still exist in 1.8, wouldn't they still conflict with one another? Also can't you still set ID's to your own ID rather than them getting a random ID?

There is no point to users setting specific block or item IDs, but Minecraft / Forge still use them internally. You don't need to bother with a config option for it nowadays.

item and block ID's

 

1) The apostrophe means possessiveness, not plural.  Items.  Blocks.  IDs.

2) You're about a year and a half slow coming to the realization that IDs are no longer needed, except in a very few scant situations for which

Block.getBlockById

and

Block.getIdFromBlock

are for (for example: I have a block that needs to remember what block was in the space when it was put down, so that the original block is rendered and then replaced, when my block is later removed.  Internally I use the Block object, but in order to save/load from disc, I have to save/load the original block's ID.  I probably should do it by name though).