My first batch had some flaws, but I had already started reading How To Brew and following this forum by the time I started drinking it, so none of the flaws were surprises. I lowered the temp midway through fermentation instead of raising it and ended up with diacetyl. I also used the full packet of priming sugar, even though I boiled off more than expected, and ended up with a smaller yield. Needless to say, there was some gushing going on.
Batch 1 was passable, and was enjoyable simply because it was my first batch of homebrew. I was already working on batches 2 and 3 by the time the bottles were ready, and knew what I had done wrong with my first batch. Each batch was better than the previous, and my brewing grew by leaps and bounds for much of the first year.