I've got a 2010 edition of Kaplans GMAT Premier study guide that a friend gave me. Will this be sufficient, or do I need the most up-to-date edition ? I would think the new edition is covering the exact same info (except the questions would just be different). Is my reasoning correct?
You are correct, the only change a newer edition brings forth is addition of some new Qs, concepts don't change.May be you can borrow/browse through the new edition & compare with the one you already have, that should do.
Just my opinion !

















