Well, I made my first batch today, and unfortunately, I got a big "F".
I got all done cooking, cooled it down, poured it into the carboy and just as I was taking a hydrometer reading, I broke the glass on the hydrometer. It fell into my carboy, and I couldn't read it. I was able to fish it out with a piece of hose, and I figured I'd push it into the hose a bit so I could pull it out after reading it. The hydrometer broke and the bits of glass fell into the beer. I ended up dumping my whole batch since I didn't want to risk a small piece of glass getting into a bottle.
I was soo pissed that I almost put my fist through a wall. I was smart enough to realize I'd have to patch the hole, so I stopped myself. There was a whole lot of cursing and I went outside and kicked my garbage can across the back yard... That was 8hrs ago, and I've kinda cooled off a bit. I don't have any local supply houses around here, so now I have to order more supplies and try again. I guess it could have been worse.. I could have fermented a few weeks and realized I had screwed up somewhere else.. At least it was only 4 hrs I wasted...