There’s one rebate program that takes over you thermostat sometimes, but that’s not required or anything. Insulation and air sealing is the way to go, but there’s no harm in getting a professional opinion first with the efficiency audit. They’ll tell you what to prioritize, and you’ll get some free swag.

If you're using fiberglass insulation, make sure to wear long sleeves and gloves, those glass fibers are itchy when they imbed themselves in your skin. A mask would be a good idea too. And make sure you only stand on the joists, anything else and you'll find yourself in the room below.

You may want to put an order in for at Lowes or the Home Depot sooner rather than later because a lot of people like to tackle these projects over the weekend, and you might want to have it delivered, especially if you have a large attic because it takes up a lot of space. Overall, you should notice big improvements in having your attic insulated...

Good luck!

I helped a friend do the blow in insulation in his attic. It is very easy to do with two people. I don't remember what improvement he saw, but it was significant. There is some prep work to make sure you don't block your soffets.