If you like Cryptography and you like to learn programming language, then i would suggest you to read Hacking Secret Ciphers with Python. It's available for free in PDF format or the online HTML version or you can buy it for $25 in Amazon.
What you will get is a fun tutorial with Python on Cryptography. This book is aimed at people who have no experience programming or with
cryptography. The book goes through writing Python programs that not
only implement several ciphers but also can hack these ciphers.
The book's website is available on http://inventwithpython.com/hacking