diff --git a/ib-clearance.py b/ib-clearance.py
index d1ef50d..f98425a 100755
--- a/ib-clearance.py
+++ b/ib-clearance.py
@@ -21,7 +21,7 @@ import time
 
 def connect_database(file):
     """
-    Create and return Connection object
+    Creates and returns Connection object.
     :param file: database file
     """
     conn = sqlite3.connect(file)
@@ -30,7 +30,7 @@ def connect_database(file):
 
 def get_lower_weekday():
     """
-    Return current weekday's name as lowercase string
+    Returns current weekday's name as lowercase string.
     """
     day = time.strftime("%A")
     lower_day = day.lower()
@@ -39,7 +39,7 @@ def get_lower_weekday():
 
 def check_id(conn, id):
     """
-    Return True if existing ID, False is not.
+    Returns True if existing ID, False if not.
     :param conn: Connection object
     :param id: ID of student, int
     """
@@ -56,7 +56,7 @@ def check_id(conn, id):
 
 def select_final_time(conn, day, id):
     """
-    Return ending time of final lesson student must attend, or None.
+    Returns ending time of final lesson student must attend, or None.
     :param conn: Connection object
     :param day: current weekday, lowercase str
     :param id: ID of student, int
@@ -86,7 +86,7 @@ def select_final_time(conn, day, id):
 
 def parse_time_string(timestring):
     """
-    Parse given 24h time string of format "HH:MM" into time_struct
+    Parses given 24h time string of format "HH:MM" into time_struct.
     :param timestring: time string "HH:MM"
     """
     timestruct = time.strptime(timestring, "%H:%M")
@@ -95,7 +95,7 @@ def parse_time_string(timestring):
 
 def main():
     db = input(
-        "Please enter name of database (located in the same folder as the program): ")
+        "Please enter name of database (in same folder as program): ")
 
     y = "y"
     while y == "y":
@@ -104,22 +104,24 @@ def main():
         id = int(input("Please input the student ID number: "))
 
         if check_id(conn, id):
-            raw = select_final_time(conn, day, id)
-            final = parse_time_string(raw) if raw != None else None
+            raw_time = select_final_time(conn, day, id)
+            final_time = parse_time_string(
+                raw_time) if raw_time != None else None
 
-            if final != None:
+            if final_time != None:
                 current_time = parse_time_string(time.strftime("%H:%M"))
 
-                if current_time > final:
+                if current_time > final_time:
                     print("Clear to leave.")
                 else:
                     print("Student does not have clearance.")
-            elif final == None:
+
+            elif final_time == None:
                 print("Clear to leave.")
         else:
             print("Student does not exist in the database. Please try again.")
 
-        y = input("Press y and enter to run again.")
+        y = input("Press y key followed by enter to run again.")
 
 
 if __name__ == "__main__":