The Black & White Adjustment Layer allows you to easily make a color image appear grayscale and then apply other effects from there.
This feature works the same in all recent versions of Adobe Photoshop: CS5, CS6, and Creative Cloud (CC).
Tracy has been a senior graphic designer/programmer, instructor, and consultant since 1993 and has developed hundreds of logos, marketing materials, websites, and multimedia solutions for customers worldwide, including involvement in large corporate software rollouts. She has helped many organizations optimize and streamline data solutions. She teaches both onsite and online courses and has her CTT (Certified Technical Trainer) certification. Tracy specializes in teaching graphics, desktop publishing, web design, reporting/productivity applications, as well as the creation of online courses with software from leading vendors.