This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
The Servlet FAQ has a list of Java hosting companies. They mostly support Tomcat, Resin and/or JBoss (those being the major open source servlet containers). WebSphere is a commercial product, and so any hosting plan that offers it will be significantly more expensive.