Where to start?  Start with sasCommunity and you can join LinkedIn and Twitter from there.  You have already seen some YouTube via web browsing.  You are aware of the SAS sites but try a Google search for completeness.  Contribute on the JMP blog.  There are two JMP-interest sites on Linked In.  One for professional exchange and one for analysis and statistical graphics. Personally, we use a circle of blogspots for family and home business.  On the left you see sites used for SAS Global Forum, mainly LinkedIn, sasCommunity, and Twitter.  Lower right has two political sites;  Trivani for “Prosperity with Purpose”;  and the largest social network of them all, FamilySearch for the whole human family.