Some things that I've picked up last year that are a good starting point:
- timeleft dinners. I get dinner with 5 strangers every few weeks. Tons of fun and you meet a lot of interesting people.
- swing dancing: I went on a date to a social dance and immediately became addicted. It has taken a while to learn the basics, and some of the unwritten rules of the dance floor, but now this is an activity I can take with me to many of my city's social dances and meet all sorts of people. It has greatly improved my social skills and confidence.
I think the biggest different this year will be the amount of effort I put into organizing social events: I've found that everyone seems to be waiting for an invite, but no one wants to do the inviting! OP hinted at this in his article.