The Microsoft Newsletter this month had some great material in it. As far as newsletters go, I recommend this one. This is a short excerpt.
Welcome to Small Business+ Insight, the newsletter that delivers custom small business advice and technology information to help you succeed. Look for the plus sign
to identify Small Business+ exclusives. This month, get the ins and outs of gamePLAN, a collection of online resources that include insights, advice, and case studies to help you optimize your technology budget, reduce IT spending, and better manage your business costs. 
With the right productivity solution, you and your team will spend less time hunting for answers and more time delivering results. Learn more.