Fixed typo, smoothed some wording in README

Author: deeplook

README.md

@@ -4,14 +4,15 @@ This work is licensed under a
 [Creative Commons Attribution 4.0 International (CC BY-NC-SA 4.0)]
 (https://creativecommons.org/licenses/by-nc-sa/4.0/).
 
-There is already a fair number of book about Numpy (see Bibliography_) and a
+There is already a fair number of books about Numpy (see Bibliography_) and a
 legitimate question is to wonder if another book is really necessary. As you
 may have guessed by reading these lines, my personal answer is yes, mostly
-because I think there's room for a different approach concentrating on the
-migration from Python to Numpy through vectorization. There is a lot of
+because I think there is room for a different approach concentrating on the
+migration from Python to Numpy through vectorization. There are a lot of
 techniques that you don't find in books and such techniques are mostly learned
-through experience. The goal of this book is to explain some of them and to
-make you acquire experience in the process.
+through experience. The goal of this book is to explain some of these
+techniques and to provide an opportunity for making this experience in the
+process.
 
 Website: http://www.labri.fr/perso/nrougier/from-python-to-numpy