J.S.
Let me just say, do not go overboard. They do not even realize what is happening. My daughter was actually sick for her first so it did not turn out as I planned. You have to exspect the unexpected. It is more about adults. Have cute decorations and a cake, but really no games are nessary unless you have younger kids. There are some cute games on line. I just googled 1st birthday parties and there are many links. Just try to relax and enjoy your first year with your son. Too much and you will be too overwhelmed. Also, just a note, schedule it around his nap. Perferably afterwards, they seem to be in a better mood! Good luck and enjoy!!!