When comparing Grok Learning vs Think Python, the Slant community recommends Think Python for most people. In the question“What are the best resources to learn Python?” Think Python is ranked 7th while Grok Learning is ranked 24th. The most important reason people chose Think Python is:
The book is available for free in PDF and HTML formats. A hardcover version can be bought from [Amazon](http://www.amazon.com/gp/product/144933072X).
Ranked in these QuestionsQuestion Ranking
Pro Regularly holds competitions
Has regular "Competitions" that teach Python and award certificates at the end.
Browser-based fully interactive Python programming tutorials.
Requires no prior programming experience. Designed primarily for school students, but the general public is welcome to join.
Pro Multiple difficulty levels depending on experience
Pro Intuitive UI
Pro Free versions available
The book is available for free in PDF and HTML formats. A hardcover version can be bought from Amazon.
Think Python is a free book designed for those with no background in programming. It starts with basic concepts of programming, and is carefully designed to define all terms when they are first used and to develop each new concept in a logical progression. Larger pieces, like recursion and object-oriented programming are divided into a sequence of smaller steps and introduced over the course of several chapters.
Con Somewhat expensive
Prices for students start at $30 AUD per course.
Con Some missing instructions for absolute beginners
Some exercises sometimes require taking steps that aren't explained. Some functions and commands are used without explaining their purpose.