Honestly, the API docs and Gem are so good you don't need a book.
From sitting down can looking over the docs to charging my debit card for a monthly subscription took about an hour (and I'm not even that good with ruby, if you're a pro you could do it in half an hour I reckon).
Honestly, the API docs and Gem are so good you don't need a book.
From sitting down can looking over the docs to charging my debit card for a monthly subscription took about an hour (and I'm not even that good with ruby, if you're a pro you could do it in half an hour I reckon).