Tools for connecting with other researchers
There are various sites which offer networking opportunities beyond the usual ResearchGate and Academia.edu; some of which are also referencing tools:
Email list groups for the education/research sector
Sharing and networking reference management service owned by Elsevier
Free reference management tool where you can also see other people's lists and search for people.
From the people behind jobs.ac.uk, Piirus is a way to opt into consultancy opportunities as well as identify potential collaborators and connect with other researchers directly.
Other tools are available for promoting your research and profile as an academic:
Kudos is free for individuals and many publishers and institutions subscribe to this product in order to give complex academic work a plain language overview. In addition, Kudos can be used to track altmetrics and impact of your work.
The Conversation is an independent source of news and views, sourced from the academic and research community and unlocked for use by the wider public: where journalism meets academia. Only members of academic communities can post.
Guide to Twitter
LSE have produced a guide for researchers to using Twitter - although quite old now it still contains some useful beginner's information: