Besides the files included in the repo, the following are also useful links to learn SAS.
The best resource to learn BASE SAS certification, please check here (http://web.utk.edu/sas/OnlineTutor/1.2/en/60476/paths.htm)
The best resource to learn Advanced SAS certification, please check here (http://web.utk.edu/sas/OnlineTutor/1.2/en/60477/paths.htm)
UCLA SAS tutorial (http://www.ats.ucla.edu/stat/sas/)
Of course, also check http://www.sas.com for any information you need.