SAS String Functions
SAS Sample Code
ucla ats: https://stats.idre.ucla.edu/sas/modules/
Learn SAS in 50 minutes (Reading material)
short videos to learning SAS quickly. You should be following along with the video
SAS Documentation
manual 9.1.3 http://support.sas.com/onlinedoc/913/docMainpage.jsp
SAS Macro Reference
SAS Online Course