Oh- I feel your pain. I am a recent returnee to cycling (long hiatus since high school) and had to relearn about flat tires, presta valves, pumps etc. My first flat on the new bike also showed up at home. I had already watched two videos and my dh was on hand to walk me through it, but it still interrupted ride plans. I have had about 5 flats in the last month or so because I live in the desert and we have thorns everywhere. So I now have gator skin tires with kevlar and have high hopes to avoid getting any more. (was going to make a bad pun about having those hopes deflated by more punctures....)