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 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.