First, you should read and register as given @ http://javajee.com/forum-topic/get-paid-for-learning-and-sharing.
Once you register and your registration is complete, do the following:
Install eclipse, tomcat and execute the example @ http://javajee.com/hello-world-servlet-application-in-eclipse-with-tomcat. Send us the screen shot of completion to mail given to you after registration and confirmation.
Install MySQL community server as given in the book http://javajee.com/sql-and-database-notes. Send us the screen shot of completion to mail given to you after registration and confirmation.
Above tasks are required to make sure that you have a system that can run the required software and you have a decent internet connection.
Topics to revise
Knowledge of below topics are good to have to effectively work on future learning tasks.