Esperanto it's a language I've never learned, Mostly cause I had kind of preconceptions towards "artificial languages". Now it changes, here on italki i read about many people having good experiences learning it, describing it as a easy and enjoyable. I'd like to know if there are useful books for learners (not only grammar but also dialogues). Thanks.
I did my correspondence course of Esperanto by studying the book "Teach Yourself Esperanto". It's a good book to start with. I am new here on italki and I am capable of correcting Esperanto texts, so if you want to practise written Esperanto, I will be glad to help you with corrections. Good luck with Esperanto!
A complete grammar of Esperanto is really good it has vocabulary, grammar, stories, and a lot of conversations. It is free because its copyright expired. You can learn how to pronounce it on lernu.net
The book I am using to learn Esperanto is called "The Esperanto Teacher" and is available for free online as a PDF. There ia also "Teach Yourself Esperanto" which is also available online.
The most popular way to learn Esperanto is by using the website Lernu!. There are also courses on Memrise which I found very helpful. Here is a link to a large collection of Esperanto resources http://www.learnlangs.com/esperanto/resources