It’s the season for brackets, office pools and debating with your co-workers: March Madness is upon us. We’ve got an interactive bracket, daily coverage and more.

For a guide to Friday’s must-see games, check out The Early Lead. The Post’s Mark Giannotto rounds up Thursday’s greatest hits and predicts Friday’s upsets.

The Going Out Guide has a “bar bracket” for great places to watch the games. Bars compete in divisions like “Charcuterie and Imports” and “Wings and Domestics.” (And if you’re planning to go out this weekend, don’t forget to check Metro’s planned track work schedule.)

Cincinnati practices for an NCAA college basketball tournament game on Thursday in Nashville. Cincinnati is scheduled to play Texas Friday. (Mark Humphrey/AP)

It’s not too late to register for our bracket challenge! You can change your picks before each round — especially useful if a single game blows up your bracket. Participants 18 and older are eligible to win prizes.

Have you seen Alex Ovechkin’s bracket? The D.C. Sports Bog’s Dan Steinberg names four things that make Ovie’s bracket “amazing.”

If you still can’t get enough college basketball, check out our PostSports NCAA Tournament home page.

View Photo Gallery: The NCAA men’s basketball tournament is underway as teams from across the country vie for the national championship.