This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
The key point to remember from Louie's post is that you don't need to know the difference between keywords and reserved words for the exam. You just need to know which words are reserved and can't be used as identifiers.
So, even though "for" is a keyword and "true" is a literal, you only need to know that neither one is allowed as an identifier.