Update README.md

Author: AlexArcPy

README.md

@@ -7,7 +7,7 @@ This is an attempt to provide a structured collection of resources that could he
 
 The resources will include books, web pages and blog posts, online courses, videos, Q/A from GIS.SE, links to code snippets, and some bedtime readings. 
 
-_The resources will focus mostly on learning about Python for users of Esri software though there will be some links that will apply even for open-source GIS professionals._
+_The resources will focus mostly on learning about Python for users of Esri software though many topics will apply for open-source GIS professionals as well._
 
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@@ -55,22 +55,22 @@ At this point, you should be able to:
 - write code for calling ArcGIS GP tools from Python code and inspect the `Result` object returned
 - perform an operation on multiple datasets in batch mode using `arcpy` listing functions
 - read and update attributes & geometry of features using `arcpy.da` cursors
-- create and operate `arcpy.Geometry()` objects (accessing both their properties and methods)
+- create and operate `arcpy.Geometry()` objects (accessing their properties and methods)
 - create an ArcGIS toolbox with a simple script tool executing a Python source file
 - report information about map layers (eg. data sources, broken paths, definition queries) within an ArcMap map document (.mxd) using `arcpy.mapping` module
 
 ### Python
 At this point, you should be familiar with:
-- variables of different data types (numeric, string, date etc.)
+- variables of different data types (numeric, string, Boolean, date etc.)
 - data structures of different types (list, tuple, dictionary, set)
 - `for` and `while` loops, `if-elif-else` blocks
 - import of external Python modules and packages (eg. `import os`)
 - functions and how they work (eg. input arguments and `return` statement)
-- reading/writing of text files using the `os` module
+- reading/writing text files using the `os` module
 
 ### Exercises
-This section contains the examples of tasks that you might need to write at some point of time. Implementing these tasks in Python code would be a good sign that you have mastered the basics of Python for ArcGIS.
-- get a list field names of Date type in a file geodatabase feature class
+This section contains the examples of tasks that you might need to write at some point of time. Implementing these tasks in Python code would be a good sign that you have mastered the basics of Python for GIS.
+- get a list of field names of Date type in a file geodatabase feature class
 - copy multiple shapefiles into a file geodatabase at once
 - re-project all rasters in a folder
 - update data sources for layers in a map document and save a new map document