Received the book and started it.  Thank you.
But, need some advice.  Almost all the web pages I find about bitcoin and the curve have examples in Ruby.  The book uses Python.  In none of the examples online and so far in the book, nothing is said about working with very long numbers.  So I presume that is trivial to both languages.  Is this correct?  I will want to use some simple GUIs to help me understand what I am going.

Should I use Ruby per all the web pages, or Python per the book.  The book is probably more comprehensive than the web page but I don't know.