Actually I have two problems I'd be happy for some advice.

1. I have two old chestnut trees in my backyard that provide beautiful shade, but also drop a lot of those spikey little landmines all over my yard. I do the best I can to rake them up, but inevitably a lot of the smaller ones work their way down into the lawn I've also got tons of older seed hulls lodged into the grass. Is there a bette way to get these nsty little guys out of my grass? I want to make the backyard as barefoot friendly as possible.

My other concern is the grass tends to grow in clumps and lumps. It looks nice from a distance, but isn't very even to walk on or soft to bare feet. Is there a way to even out my lawn and should I reseed in the fall so the next spring the grass is thicker? This is my first yard and I'm at a bit of a loss.