This week's book giveaways are in the iOS and Features new in Java 8 forums. We're giving away four copies each of Barcodes with iOS: Bringing together the digital and physical worlds and Core Java for the Impatient and have the authors on-line! See this thread and this one for details.
Any third-party hosting site which supports at least Java web applications (.war files) will be fine with Spring. Spring does not require any special privileges beyond that enjoyed by any other webapp.