Here is a cornucopia of great stuff from Sales HQ. You could go to this site every day for a year and read new articles or get motivated for trying new and proven techniques. We are suggesting the following four around product presentation/value, competition and the importance of asking questions. Enjoy!
http://saleshq.monster.com/training/articles/3571-wow-do-i-ever-have-a-drug-for-you
http://saleshq.monster.com/training/articles/452-recognizing-your-biggest-competitor
http://saleshq.monster.com/training/articles/617-product-features-advantages-and-benefits
http://saleshq.monster.com/training/articles/1048-the-key-to-building-value