So I just started my second batch of beer (hopefully my first successful batch) and have been doing a lot of reading on this site. I noticed that while the instructions that came with my IPA kit say I only need to let the beer sit in the fermenter for 3-4 days before bottling and letting it age 3 weeks in the bottles, a lot of people on this site recommend waiting up to 3 weeks before bottling and then still letting it age in the bottles as well. My question is, should I follow the directions that come with the kit, since they should know their own product, or would I be better off letting it age in the fermenter longer as some people here tend to suggest?