Life is far too short to read even a small fraction of everything written about these elections. Here is a list of sources that I have found helpful, and which I hope will be helpful for others.

• A Different Democracy (by Taylor, Shugart, Lijphart, Grofman) is a book by well-known political scientists that looks at American exceptionalism when it comes to elections and electoral systems by comparison with 30 other countries. It will be particularly valuable for Americans who haven’t seriously thought about how other countries elect representatives.
• Making Democracy Count (by Ismar Volic), published this month,  is  aimed at a wider audience than the previous book. It aims to explain how mathematics underlies every aspect of electoral system design, and how we might improve the current system.
• Wikipedia is a startlingly useful resource for almost any topic that is not controversial.  The articles related to US politics contain a wealth of information. One could start here for an overview. Almost any topic I have thought of while writing these blog posts has had useful information on Wikipedia.
• For fact-checking of claims by politicians, and an accounting of progress on campaign promises, Politifact is a good basic resource.
• Unbiased and useful news about politics is tricky to obtain. There is too much emphasis on the “horse race” aspects of which candidate or party is winning, and not enough on information to allow voters to make a clear comparison between candidates. The standard advice to read widely and take bias into account is still good. I have not used the aggregator websites such as Real Clear Politics and  Politico, but they may be an efficient way to find content. I have mostly read New York Times, Washington Post and Guardian.