Just a very brief post to say check out the fabulous NLPN's Useful Resources page. They've brought together a list of professional library bodies, groups and networks, blogs, job sites, journals and databases and even institutional repositories.
It's aimed primarily at New Profs but it's useful for everyone in interested in the wider profession. If I'd had this kind of curated list of useful stuff when I came into the profession I would have found it so much easier to understand the wider context and become part of a bigger conversation. You really could get through years of librarianship before you needed more than what NLPN've put together on this list. Get to it!