Take it to the bike shop if you are tired of bike fixing for now, but I think this is a good opportunity to practice taking off the tire and installingh a new tube. Its a lot easier to do in the comfort of your home than by the side of the road in the rain with passing traffic splashing muck all over you. You also need to look for the cause of the flat - maybe a spoke or possibly the tube was pinched between the tire bead and the rim. Whatever you are doing to fix your bike first print the instructions found in:
http://www.parktool.com/repair_help/FAQindex.shtml