Looking for couponing help to make a large donation to fire evacuees.

Over the past week, the Creek Fire has absolutely devastated the Central California community that I grew up in. I've donated items and volunteered time, but I'd love to do more. I have never couponed, but I was hoping it could be a good way to donate a bunch on a budget. Can anyone offer super-newbie-beginner advice on couponing? Any deals going on right now for shelf food, gatorade, coffee, hygiene products, baby clothes, batteries, blankets, etc.? Off the top of my head, we have Target, Walmat, CVS, Walgreens, Rite-Aid, Save Mart, Vons, Dollar Tree, 99 Cent Store, FoodMaxx, Food4Less, Trader Joe's, and more. Thanks in advance for any help!