Books 24x7.com renewed its lease for 10,137-square feet of office space at 100 River Ridge Dr., Norwood, MA. 100 River Ridge, built in 1989, is a 103,321 square foot, 3-story, Class-A office building, located on a 50-acre wooded campus. Books 24x7, a subsidiary of SkillSoft Corp., develops online reference ware libraries for IT and business professionals. Sean Teague and Tom Kent of Trammell Crow Co. represented Books 24x7 directly with the owner, Cornerstone Corporation.