Writing for Research (Prof Patrick Dunleavy) https://medium.com/@Write4Research
Everything you ever wanted to know about writing and preparing papers, choosing journals, and other great publishing advice.
Publishing Addiction Science http://www.parint.org/isajewebsite/isajebook2.htm
A superb guide to all aspects of publishing which is relevant to all researchers
How to report (almost) anything http://www.equator-network.org/
Everything you ever wanted to know about publication ethics http://publicationethics.org/
Includes what to do about fabricated data, plagiarism, reviewer ethics, conflicts of interest, changes in authorship, how to complain, and advice for editors. From the Committee in Publication Ethics.
A place to explain your research simply, and in plain language. You can monitor and improve your research reach, and monitor how it is used by social media.
Open access and the post 2014 REF http://www.hefce.ac.uk/pubs/year/2014/201407/ (For those working in the UK or hoping to in the next few years)
Get credit for your peer review at publons http://www.publons.com
(Some) Academic social networking sites