Newbie advice

My husband just lost his job and I would completely appreciate advice. Went to food pantry today.

I used coupons years ago, but never was an expert where you see people getting hundreds of dollars of goods for free.

Is there anywhere I can go to get an overall view of what couponing is like now?

Do you get them from the Sunday newspaper flyer like years ago? Are they all digital now?

Do stores do triple or double off coupons like they used to?