Finding credible information in the wild west of the internet can be daunting. There are quite a number of sites overseen by doctors and other medical professionals like WebMd. And you will find many of these from places like the ADA, Joslin or Mayo. But as many of us have learned these sources of information are often “flawed” even if the supposedly come from professionals. And unless you have an ability to interpret all the science and math in studies, something like pubmed may not be helpful.
And determining whether a governmental site is useful or credible can be hard. There is an organization called Health on the Net Foundation that has established a code of conduct and sites that sign up to follow the code of conduct will display the logo or link to HONCODE. You can see that TuDiabetes has signed up and at the bottom of the home page is the indication.
As far as what I follow for new research and announcements, like @Terry4 I also use Diatribe both as a place to visit and to get their newsletter. I am also a fan of DiabetesInControl, again both a site and newsletter. I also follow the ADA professional newsletter. If you attend the ADA Scientific Sessions they will sign you up, but I believe you can also sign up via this link.