IBM has recently released some great how-to video's for both iOS and android.
Be sure to check them out using the URL's below.
http://ibmtvdemo.edgesuite.net/software/analytics/cognos/videos/HTVs/cma102/index.html
http://ibmtvdemo.edgesuite.net/software/analytics/cognos/videos/HTVs/cm102/index.html