Add verbosity and clarification to First Item tutorial page

develop/items/first-item.md

@@ -18,10 +18,13 @@
 
 This method will create an item with the provided identifier and register it with the game's item registry.
 
-You can put this method in a class called `ModItems` (or whatever you want to name the class).
+You can put this method in a new class next to your ModInitializer class.  
+(We will assume this class is called `ModItems` for the rest of this page, but you can call it whatever you want).
 
 Mojang does this with their items as well! Check out the `Items` class for inspiration.
 
+Make sure to replace "FabricDocsReference.MOD_ID" with a reference to the MOD_ID in your "ModInitializer" class
+
 @[code transcludeWith=:::1](@/reference/latest/src/main/java/com/example/docs/item/ModItems.java)
 
 ## Registering an Item {#registering-an-item}
@@ -36,18 +39,33 @@
 This will not work if you've marked the item as damageable, as the stack size is always 1 for damageable items to prevent duplication exploits.
 :::
 
+Following this example, we will create a new "Suspicious Substance" item, by adding this static field to your `ModItems` class.
 @[code transcludeWith=:::2](@/reference/latest/src/main/java/com/example/docs/item/ModItems.java)
 
-However, when you go in-game, you can see that our item doesn't exist! This is because you don't statically initialize the class.
+However, when you go in-game, you can see that our item doesn't exist! This is because there are no references to the ModItem class which would initialize it when Minecraft starts.
+
+To force initialization of the static field, you can add a public static initialize method to your class and call it from your `ModInitializer` class. Currently, this method doesn't need anything inside it.
 
-To do this, you can add a public static initialize method to your class and call it from your `ModInitializer` class. Currently, this method doesn't need anything inside it.
+#### ModItems.java
 
 @[code transcludeWith=:::3](@/reference/latest/src/main/java/com/example/docs/item/ModItems.java)
 
+#### Your class that implements `ModInitializer`
+
 @[code transcludeWith=:::1](@/reference/latest/src/main/java/com/example/docs/item/FabricDocsReferenceItems.java)
 
 Calling a method on a class statically initializes it if it hasn't been previously loaded - this means that all `static` fields are evaluated. This is what this dummy `initialize` method is for.
 
+Once you've added this method, you can run your mod and use the following command to give you the suspicious substance item.
+
+```command
+/give @s <mod-id>:suspicious_substance
+```
+
+Make sure to replace `<mod-id>` with your mod's ID!
+
+Though you will be able to give yourself the item, it still won't show up within the creative inventory.  For that, you will need to register the item to an Item Group, described next.
+
 ## Adding the Item to an Item Group {#adding-the-item-to-an-item-group}
 
 ::: info
@@ -98,6 +116,8 @@
 
 Create the model JSON in the `assets/<mod id here>/models/item` folder, with the same name as the item; `suspicious_substance.json`
 
+Note: Ensure you put your mod-id in place of "fabric-docs-reference"
+
 @[code](@/reference/latest/src/main/resources/assets/fabric-docs-reference/models/item/suspicious_substance.json)
 
 ### Breaking Down the Model JSON {#breaking-down-the-model-json}