diff --git a/MySQLNotes.md b/MySQLNotes.md
index f6bf391..a39e9db 100644
--- a/MySQLNotes.md
+++ b/MySQLNotes.md
@@ -10,57 +10,57 @@
 
 ```sql
 -- CREATE DB/TABLES
-SHOW DATABASES;
-CREATE DATABASE our_database_name;
-USE our_database_name;
-CREATE TABLE people (first_name VARCHAR(20), age INT);
-DESCRIBE people;
+SHOW DATABASES; -- show all sub databases
+CREATE DATABASE our_database_name; -- create a sub database
+USE our_database_name; -- use that sub database
+CREATE TABLE people (first_name VARCHAR(20), age INT); -- craete a table with a text first_name column and an integer age column
+DESCRIBE people; -- look at the table's schema
 
 -- CRUD
-INSERT INTO people (first_name, age) VALUES ('Matt' , 34);
-SELECT age FROM people;
-SELECT * FROM people;
-UPDATE people SET weight = 300 WHERE first_name = 'Bill';
-DELETE FROM people WHERE first_name = "Bill";
+INSERT INTO people (first_name, age) VALUES ('Matt' , 34); -- insert a row into people table
+SELECT age FROM people; -- find all people, display just the age column
+SELECT * FROM people; --  find all people, display all columns
+UPDATE people SET weight = 300 WHERE first_name = 'Bill'; -- set weight to 300 for all rows that have a first_name column set to Bill
+DELETE FROM people WHERE first_name = "Bill"; -- delete all rows that have a first_name column set to Bill
 
 -- OPERATORS
-SELECT * FROM people WHERE age != 63;
-SELECT * FROM people WHERE age < 63;
-SELECT * FROM people WHERE age > 63;
-SELECT * FROM people WHERE age >= 63;
-SELECT * FROM people WHERE age <= 63;
-SELECT * FROM people WHERE first_name LIKE "%Charlie%";
-SELECT * FROM people WHERE first_name NOT LIKE "%Charlie%";
-SELECT * FROM people WHERE age IS NULL;
-SELECT * FROM people WHERE age IS NOT NULL;
+SELECT * FROM people WHERE age != 63; -- find all rows that have an age that doesn't equal 63
+SELECT * FROM people WHERE age < 63; -- find all rows that have an age less than 63
+SELECT * FROM people WHERE age > 63; -- find all rows that have an age greater than 63
+SELECT * FROM people WHERE age >= 63; -- find all rows that have an age greater or equal to than 63
+SELECT * FROM people WHERE age <= 63; -- find all rows that have an age less than or equal to than 63
+SELECT * FROM people WHERE first_name LIKE "%Charlie%"; -- find all rows that have a first_name that contains the value Charlie
+SELECT * FROM people WHERE first_name NOT LIKE "%Charlie%"; -- find all rows that have a first_name that does not contain the value Charlie
+SELECT * FROM people WHERE age IS NULL; -- find all rows that do not have any value for the age column
+SELECT * FROM people WHERE age IS NOT NULL; -- find all rows that have any value for the age column
 
 
 -- AND/OR
-SELECT * FROM people WHERE first_name = 'Matt' AND age = 43;
-SELECT * FROM people WHERE first_name = 'Matt' OR age = 49;
+SELECT * FROM people WHERE first_name = 'Matt' AND age = 43; -- find all rows that have a first name set to Matt AND also have an age set to 43
+SELECT * FROM people WHERE first_name = 'Matt' OR age = 49; -- find all rows that either have a first_name set to Matt OR have an age set to 49
 
 -- ORDER
-SELECT * FROM people ORDER BY age DESC;
-SELECT * FROM people ORDER BY first_name DESC;
-SELECT * FROM people ORDER BY age ASC LIMIT 2;
-SELECT * FROM people ORDER BY age ASC LIMIT 2 OFFSET 1;
-SELECT * FROM people ORDER BY age DESC, first_name ASC;
+SELECT * FROM people ORDER BY age DESC; -- find all rows, but sort them in order of decreasing age
+SELECT * FROM people ORDER BY first_name DESC; -- find all rows, but sort them in order of decreasing first_name values (reverse alphabetal)
+SELECT * FROM people ORDER BY age ASC LIMIT 2; -- limit the results to 2
+SELECT * FROM people ORDER BY age ASC LIMIT 2 OFFSET 3; -- limit the results to 2, but don't show the first 3 records
+SELECT * FROM people ORDER BY age DESC, first_name ASC; -- order by age descending, for any rows that have the same age value, order those rows by first_name ascending
 
 -- ALTER TABLE
-ALTER TABLE people ADD COLUMN weight FLOAT;
-ALTER TABLE people DROP COLUMN height;
-ALTER TABLE people MODIFY COLUMN height FLOAT;
+ALTER TABLE people ADD COLUMN weight FLOAT; -- add a weight column that is a FLOAT (decimal number)
+ALTER TABLE people DROP COLUMN height; -- drop the height column
+ALTER TABLE people MODIFY COLUMN height FLOAT; -- change the height column to be a FLOAT (decimal number)
 
-ALTER TABLE people ADD COLUMN height FLOAT AFTER first_name;
-ALTER TABLE people MODIFY COLUMN height FLOAT AFTER age;
+ALTER TABLE people ADD COLUMN height FLOAT AFTER first_name; -- add a heigh column after the first_name column
+ALTER TABLE people MODIFY COLUMN height FLOAT AFTER age; -- move an existing height column so that it is after the age column
 
-ALTER TABLE people ADD COLUMN id INT FIRST;
-ALTER TABLE people MODIFY COLUMN height FLOAT FIRST;
+ALTER TABLE people ADD COLUMN id INT FIRST; -- add an id column in the first position
+ALTER TABLE people MODIFY COLUMN height FLOAT FIRST; -- move an existing height column to the first position
 
-ALTER TABLE people ADD COLUMN dob DATETIME;
-ALTER TABLE people CHANGE dob date_of_birth DATETIME;
+ALTER TABLE people ADD COLUMN dob DATETIME; -- create a dob column which is a date
+ALTER TABLE people CHANGE dob date_of_birth DATETIME; -- change the name of the dob column to date_of_birth
 
-ALTER TABLE people ADD COLUMN id INT NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST;
+ALTER TABLE people ADD COLUMN id INT NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST; -- create an id column that increments with each new row created
 
 -- AGGREGATION
 SELECT COUNT(*), age FROM people GROUP BY age;