I've looked for good books to start with mobile dev with Xamarin (I'm a web developer, have zero experience with mobile). The few books I found are all from Packt. Are there better books? If there aren't any, I'd go with Packt (not a fan of their books though) - just thought I'd check with the community first.
Also, are there any courses available (other than Xamarin university, which is too expensive for me)?