Add arguments info.

Codecademy.md

@@ -167,6 +167,50 @@ or if it has parameters:
 greet_customer(1,ten)
 ```
 
+# Passing Arguments
+
+  ```
+  greet_customer(special_item):
+    print(special_item)
+
+  greet_customer(beef)
+  ```
+
+Result:
+
+  ```
+  beef
+  ```
+
+## Using Keyword Arguments
+
+  Keyword arguments are nice for specifying a default but changeable argument.
+
+  Here's an example from P3, Ch2, ex7
+
+```
+def create_spreadsheet(title, row_count = 1000):
+  row_count = str(row_count)
+  print("Creating a spreadsheet called " + title + " with " + row_count +" rows.")
+
+create_spreadsheet("Applications", row_count = 10)
+```
+
+```
+row_count = 1000
+```
+is the default
+
+```
+row_count = 10
+```
+
+is the passed argument and thus what is used for a result:
+
+```
+Creating a spreadsheet called Applications with 10 rows.
+```
+
 # Fun Projects
 
 Design a shop using Ex7 and Ex9 as a frame: