I don't really go to meetups and I consider myself pretty up to date.
I believe a person can keep up with the technology just by reading on the Internet, maybe by being a member of some expert groups on Facebook / LinkedIn (and reading the content).
I don't think my links would help you, most of those are Croatian (local) communities. I'm a member of some developers groups, system administrator groups and few of them for every programming language I use.
That, plus Hacker News and maybe something like TechChrunch and you should be covered nicely.
Reddit is probably a good place to get informed too, but I don't use it personally.
I believe a person can keep up with the technology just by reading on the Internet, maybe by being a member of some expert groups on Facebook / LinkedIn (and reading the content).