This post will be quick for me to write, but may suck up the rest of your morning. caveat lector.
Rachel Navarre—my friend from grad school, who works at Bridgewater State—compiled what was then an up to date collection of links on Impeachment. As she notes, keeping up with the latest developments is a full time job, and most of us already have full time jobs. But she has links to background as well as some of the most recent developments.