diff --git a/posts/category.js b/posts/category.js
index 28778a2..d30e7b2 100644
--- a/posts/category.js
+++ b/posts/category.js
@@ -1,12 +1,9 @@
-//DB query
+/** DB query */
 const sql = require('../utils/sql');
 
-//file IO
-const utils = require('../utils/utils.js');
-
+/** Object used to render blog post previews */
 const batchPreview = require('../posts/renderBatchOfPreviewes');
 
-
 /**
  * Renders all posts in a single category
  *
@@ -40,8 +37,9 @@ module.exports=
         /**
          * Calls posts and sidebar modules to render blog contents in order
          *
-         * @param res
-         * @param fileName request url
+         * @param requestURL
+         * @param request
+         * @returns {Promise}
          */
         main: function(requestURL, request)
         {
diff --git a/posts/posts.js b/posts/posts.js
index 3f32e38..9a2da59 100644
--- a/posts/posts.js
+++ b/posts/posts.js
@@ -1,7 +1,4 @@
-//file io
-const utils = require('../utils/utils.js');
-
-//DB queries
+/** DB queries */
 const sql = require('../utils/sql');
 
 
@@ -9,7 +6,6 @@ const sql = require('../utils/sql');
  * Function responsible for calling the appropriate sql requests to query
  * database and serve correct blog post
  *
- * @param res the result sent to the client
  * @param requestURL url requested from client
  * @return {*|Promise} returns a resolved promise to preserve execution order
  */
@@ -59,7 +55,8 @@ module.exports=
     {
         return new Promise(function(resolve, reject)
         {
-            Promise.all([renderPost(requestURL), require("../sidebar/sidebar.js").main()]).then(function(content)
+            Promise.all([renderPost(requestURL),
+                require("../sidebar/sidebar.js").main()]).then(function(content)
             {
                 resolve(content.join(''));
             }).catch(function(error)
diff --git a/posts/renderBatchOfPreviewes.js b/posts/renderBatchOfPreviewes.js
index bcdd1e3..6c69419 100644
--- a/posts/renderBatchOfPreviewes.js
+++ b/posts/renderBatchOfPreviewes.js
@@ -1,11 +1,13 @@
-
 module.exports=
     {
         /**
-         * Calls posts and sidebar modules to render blog contents in order
+         * Renders a bunch of blog post  previews to the user
          *
-         * @param res
-         * @param fileName request url
+         * @param baseURL-- url of the page
+         * @param posts -- sql data about the posts to render
+         * @param currentPage -- the current page to render
+         * @param numOfPosts -- number of posts to render
+         * @returns {Promise} renders the html of the posts
          */
         main: function(baseURL, posts, currentPage, numOfPosts)
         {
diff --git a/posts/renderNextBar.js b/posts/renderNextBar.js
index 7b96d3b..ff232b2 100644
--- a/posts/renderNextBar.js
+++ b/posts/renderNextBar.js
@@ -1,3 +1,11 @@
+/**
+ * Determines if the requested page is out of bounds
+ *
+ * @param page current page
+ * @param postsPerPage - number of posts rendered on each page
+ * @param totalPosts - total posts in this category/total
+ * @returns {boolean} if this is a valid page
+ */
 const isValidPage = function(page, postsPerPage, totalPosts)
 {
     return !(page === 0 || page -1 >= totalPosts/postsPerPage);
@@ -5,6 +13,17 @@ const isValidPage = function(page, postsPerPage, totalPosts)
 
 module.exports=
     {
+        /**
+         * Renders two buttons on the bottom of the page to
+         * go to the left or right
+         *
+         * Used by the home page and categories pages
+         * @param baseURL -- base url of page being rendered
+         * @param currentPage -- current page being rendered
+         * @param postsPerPage -- number of posts on each page
+         * @param totalPosts -- total amount of posts in the category
+         * @returns {Promise} promise which renders the buttons
+         */
         main: function(baseURL, currentPage, postsPerPage, totalPosts)
         {
             return new Promise(function(resolve, reject)