diff --git a/common/src/main/java/com/lukasabbe/bookshelfinspector/config/Config.java b/common/src/main/java/com/lukasabbe/bookshelfinspector/config/Config.java
index 131538e..221939b 100644
--- a/common/src/main/java/com/lukasabbe/bookshelfinspector/config/Config.java
+++ b/common/src/main/java/com/lukasabbe/bookshelfinspector/config/Config.java
@@ -12,11 +12,17 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Map;
 
+/**
+ * Config class, defines config values.
+ */
 public class Config {
     public boolean lecternToggle = true;
     public int scale = 10;
     public boolean useRoman = false;
 
+    /**
+     * Loads the config file in to mod
+     */
     public void loadConfig(){
         Path configPath = Services.PLATFORM.getConfigPath("bookshelfinspector-config.yml");
         if(!Files.exists(configPath))createConfig(configPath);
@@ -47,6 +53,9 @@ public class Config {
         }
     }
 
+    /**
+     * Saves config settings to config file
+     */
     public void saveConfig(){
         Path configPath = Services.PLATFORM.getConfigPath("bookshelfinspector-config.yml");
         if(!Files.exists(configPath)) createConfig(configPath);
diff --git a/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookData.java b/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookData.java
index 970d547..aedb2e0 100644
--- a/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookData.java
+++ b/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookData.java
@@ -3,17 +3,26 @@ package com.lukasabbe.bookshelfinspector.data;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.item.ItemStack;
 
+/**
+ * Data for a slot in a chiseled bookshelf
+ */
 public class BookData {
     public ItemStack itemStack;
     public BlockPos pos;
     public int slotId;
 
+    /**
+     * Creates data object with its data
+     */
     public BookData(ItemStack itemStack, BlockPos pos, int slotId) {
         this.itemStack = itemStack;
         this.pos = pos;
         this.slotId = slotId;
     }
 
+    /**
+     * Gets an empty BookData
+     */
     public static BookData empty(){
         return new BookData(ItemStack.EMPTY, null, -1);
     }
diff --git a/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookShelfData.java b/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookShelfData.java
index a3ae45a..61123dd 100644
--- a/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookShelfData.java
+++ b/common/src/main/java/com/lukasabbe/bookshelfinspector/data/BookShelfData.java
@@ -2,6 +2,9 @@ package com.lukasabbe.bookshelfinspector.data;
 
 import net.minecraft.core.BlockPos;
 
+/**
+ * Data for bookshelf
+ */
 public class BookShelfData {
     public boolean isCurrentBookDataToggled = false;
     public BlockPos latestPos = null;
diff --git a/common/src/main/java/com/lukasabbe/bookshelfinspector/data/Tags.java b/common/src/main/java/com/lukasabbe/bookshelfinspector/data/Tags.java
index 77d2cbb..381303d 100644
--- a/common/src/main/java/com/lukasabbe/bookshelfinspector/data/Tags.java
+++ b/common/src/main/java/com/lukasabbe/bookshelfinspector/data/Tags.java
@@ -5,6 +5,9 @@ import net.minecraft.resources.ResourceLocation;
 import net.minecraft.tags.TagKey;
 import net.minecraft.world.level.block.Block;
 
+/**
+ * Tags for blocks used in the mod
+ */
 public class Tags {
     public static final TagKey<Block> CHISELED_BOOKSHELVES = TagKey.create(Registries.BLOCK, ResourceLocation.fromNamespaceAndPath("c", "chiseled_bookshelves"));
     public static final TagKey<Block> LECTERNS = TagKey.create(Registries.BLOCK, ResourceLocation.fromNamespaceAndPath("c", "lectern"));