You can read Programming Rust online if you have Safari Books or their free trial, I started reading the book on my free trial and certainly loved it. I intend to buy this bundle to keep reading it. The book expects the reader to have previous programming knowledge, so it might seem a little bit too fast in the beginning, but it has plenty of explanations and code about the subjects being shown, if the book wasn't so expensive in my country, I would definitely get a real copy of it.