This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Kishore- Check out our handy dandy FAQ. It should take care of most of your initial questions (including the 1.2 v 1.4 question). Good luck with your studying! Feel free to come back and ask all sorts of fun studying questions when you come across them.