Welcome to my wiki guide! By popular demand I did what I could to make this as easy and simple as I could and not as overwhelming...
There's a ton of information here and it "should" be able to help you with any simple reaction modding problems you run into at the moment.
This WILL be updated with creature editing, entity editing and whatever else.
MOST IMPORTANT NOTE FOR MODDING! - With the way the "new" Dwarf Fortress is, when you are modding the easiest thing to do is just to generate a new world. This new version saves raw and graphic information IN the SAVE->(REGION1) folder. If you are editing an EXISTING world, you MUST edit the SAVE folder version and not the normal location for you to see the effects. To follow a safe motto for modding dwarf fortress... If you don't know if it needs a regen, just regen.
It seems many people don't realize the new method of save handling and reaction handling. There are multiple places that have to be altered in order for your custom reaction/building to show up to be used. For example...
If you add a smelting reaction, you have to add the reaction to the "reaction_smelter.txt", you then have to make your reaction permitted on the "entity_default.txt".
When you add a reaction to the "entity_default.txt" it will be under the [ENTITY:MOUNTAIN] listing. Your permitted reaction should look like...
When you add your custom building to the "entity_default.txt" it should look something like...
YOU WILL CHANGE "XXXCUSTOM_REACTION_NAMEXXX" and "XXXCUSTOM_BUILDING_NAMEXXX" TO WHATEVER YOU HAVE IT LISTED AS.
Now that, that is out of the way.
 Custom Build & Reaction
|Your first custom reaction and building!|
|You may not see the .txt, but don't worry, they should still be text files.
This is the guide to make a custom reaction and custom building.
-To start open up your dwarf fortress folder.
-Next go to the raw folder.
-Next go to the objects folder.
-We'll make a custom reaction that doesn't go into the smelter and has it's own custom building. So find the "reaction_other.txt" file and open it.
-We'll start with a very simple reaction to give us one free granite stone.
-Now save and close the file and look for the file named "building_custom.txt".
-You should see something along the lines of a Soap Maker Workshop entry. Go ahead and select and copy everything from "[BUILDING_WORKSHOP:SOAP_MAKER]" to "[BUILD_ITEM:1:NONE:NONE:NONE:NONE][BUILDMAT][WORTHLESS_STONE_ONLY][CAN_USE_ARTIFACT]".
-Paste this entry right below the Soap Maker entry, make sure there is a space between them, so you should now have two entries separated by a line break. You should have the following...
-Now you want to change the second entry to following.
-Now save this file and close it and look for the final file called "entity_default"
-The beginning entry should say "[ENTITY:MOUNTAIN]"
If you scroll down a bit you should eventually come to a part in the list that looks like the following.
-Now for simplicity sake and for keeping it a little organized go ahead and add the following between the "[PERMITTED_BUILDING:SOAP_MAKER]" and "[PERMITTED_REACTION:TAN_A_HIDE]"
You should now have...
-Now save and close this file.
-You have now successfully created your first custom reaction, custom building and you've added it to the entity file!
-Generate a new world and test it! Your custom building should be under the workshop menu at the bottom most likely. You could also press Shift+c to hotkey build it. It's going to use the furnace operating skill to build the workshop and use the custom reaction.
-After all is said and done you should have one workshop named "Cheat Workshop" and one extra Granite!
-Mind you this workshop is going to look like a soap makers workshop, but we want to keep things easy!
-If you want to change the appearance of your workshop, use this utility: http://dffd.wimbli.com/file.php?id=2068
 Various Reactions and Information
|Current List of Products|
|Most Creature Specific Products|
|Please see full creature list to fill in CCC.|
|Basic Body Modification|
|This section has some basic body modifications to change your dwarves in a subtle way.
 Finished Reactions/Buildings
|How to train your dwarf|
 TREES & PLANTS
|Trees & Plants|
|For food in bed|
 MINERALS, STONES, METALS, GEMS
|Minerals, Stones, Metals, Gems|
|That crap you stand on and has walled you in... plus shinies!|