Where do you find useful information on issues to communicate with your legislators about, or talking points you might not have thought about for calling or writing them?
At "What The Fuck Just Happened Today?" (whatthefuckjusthappenedtoday.com) Matt Kiser is "logging the daily shock and awe" of at least the first 100 days of the current Republican administration.
Indivisible Guide (indivisibleguide.com) has, in addition to general "best practices for making Congress listen", a number of "explainers" and phone scripts (useful for letters too!); go to "Resources" in the upper left. (The "phone scripts" link looks like it might change.)
For me Charlie Pierce's blog at Esquire Politics is a helpful source of information. He's extremely on top of issues and a great writer. As an added bonus, there's a coterie of extremely articulate and well-informed commentators that guarantee laughs after each column, and there are usually several each day.
Thanks! Another source I use is Joe Jervis's blog Joe.My.God., with lots of political news. There too, the commenters are most of the fun -- as one of them observed, "Come for the learning, stay for the snark."
They take full advantage of being able to upload pictures, or paste links to pictures and videos and have them automagically included. Rich text isn't as easy as on here (you have to use tags like <i>...</i> and <strong>...</strong>) so occasional allcaps are fine.
Many of the readers and commenters are gay men, and quite a few are nontheists, but anyone who's not a spammer, troll, or hatemonger is welcome.
It highlights dozens of issues, and uses your location or address to find your congresscritters. Sometimes it gives phone numbers of other officials and offices (such as urging your state's governor to join the United States Climate Alliance, supporting the Paris accord standards despite tRump's withdrawal).