Most definitely! I started my brewing hobby with Mr. Beer, which leads people to think that you can bottle beer after a week of fermentation, and drink it at two or three weeks. Wrong! You need patience to brew good beer! After the initial fermentation, get it off the sediment and transfer to secondary (even if it's no longer fermenting!) and let it mellow for at least two or three weeks before bottling. After bottling, give it at least three weeks before drinking. If you're brewing ales, and you've got an extra refrigerator, age it at around 50 degrees Fahrenheit for that three weeks--add a little ale yeast before bottling, since the cold temperatures will play havoc on the residual yeast you need for carbonation. You'll be rewarded with beer that's every bit as good as some of the finest name-brand beers available.
How much yeast do you add to each bottle when refrigerating?
I typically leave my beer in the primary for two weeks and do a two to three week secondary/mellowing.