I've been writing on this blog for about a year, and active as a social media professional full time for about a year and a half. Before that, I used it part time for work and quite a bit on my own for personal use.
During that time, I learned the ropes, and tried to become a savvy social media user. I felt like I had a ways to go, but that overall I was getting pretty good at this social media thing. After all, someone was paying me to do it full time, and I was building some great relationships.