How to Brew
This guy wrote a book on brewing beer, then decided to post everything for free on the Internet. I ended up buying a copy of his book just because I used the site so much when I was starting out. The homebrewing forums at
Real Beer are pretty good, too. It's a hobby not at all like computers...no one makes you feel like an ass when you ask questions
Hit up your local Homebrewing supply shop, and buy one of the kits. It'll come with everything you need to get started, sans ingredients, bottles, and brewpot, and should run less than $60. You can pick up a five-gallon enamel-ware kettle from K-mart for $20 or so. Buy one of the ingredient packs when you get your brewing kit for another $25 or so, and it'll come with everything you need to make the beer, plus enough caps for two cases of bottles. The total start-up cost should be around $100, plus bottles.
If you're cheap like me, go buy two cases of cheap beer in returnable bottles, and just don't return them. Or, use it as an excuse to buy two cases of decent beer (the bottles can't be twist off...the neck's too narrow and prone to cracking when you cap, and you run the significant risk of creating bottle bombs), and drink 'em all before you're ready to bottle.
Your brew might still be OK. The biggest risk in leaving the container open is contamination, but if the fermentation started quickly, the "good" yeast already has an advantage, and the alcohol will quickly take care of the rest of the nasties. The other risk is oxidation...oxygen will kill the taste of your brew, leaving it tasting flat and papery...but the carbon dioxide produced by the fermentation might provide enough of a cushion to keep the oxygen out.
I wouldn't pitch it yet. At the worst, you've created a vile brew that will still get you drunk if you're desperate. At best, you've got an alcoholic concoction that might actually taste OK, and you've begun a very entertaining and rewarding hobby.
Find something to seal off the container that will still let air escape. If you can, drill a hole in the lid and put in an airlock. Failing that, find a large balloon or latex glove than you can slip over the opening, and make sure to release the pressure a couple times a day.