Fix grammar and typos

Author: qDoer

Notes/01_Introduction/06_Files.md

@@ -228,7 +228,7 @@ Try it:
 >>>
 ```
 
-### Commentary:  Shouldn't we being using Pandas for this?
+### Commentary:  Shouldn't we be using Pandas for this?
 
 Data scientists are quick to point out that libraries like
 [Pandas](https://pandas.pydata.org) already have a function for

Notes/02_Working_with_data/01_Datatypes.md

@@ -58,7 +58,7 @@ Sometimes the `()` are omitted in the syntax.
 s = 'GOOG', 100, 490.1
 ```
 
-Special cases (0-tuple, 1-typle).
+Special cases (0-tuple, 1-tuple).
 
 ```python
 t = ()            # An empty tuple