This breakdown from @Nate_Cohn on how to follow the election tonight is like someone just handed you a preloaded Tweetdeck with every relevant list and slice just right there teed up. There's the needle, of course (three this year), but so much more. https://www.nytimes.com/live/2020/presidential-polls-trump-biden#how-to-follow-the-election
First up: A schedule of what to expect tonight hour by hour. The first major poll closings will be Florida, Georgia, North Carolina and Ohio. https://www.nytimes.com/2020/11/03/upshot/election-night-guide.html
When to expect results in all 50 states: https://www.nytimes.com/interactive/2020/upshot/vote-counting-today-polls-election.html
Our presidential vote tracker will include a hugely important number to keep track of: How much estimated vote in each state has yet to be counted. This is meat and potatoes for journalists tasked with actually calling races. https://www.nytimes.com/interactive/2020/11/03/us/elections/forecast-uncounted-votes-president.html