Agreed on the wide and convoluted field part. I was hoping though that there'd be some kind of resource along the lines of "the must know things of developing w

Agreed on the wide and convoluted field part. I was hoping though that there'd be some kind of resource along the lines of "the must know things of developing web apps" that covers the various topics from how to manage user data, to managing transactional email using parallel processes, to managing your data. Initially when reading your answer I thought I might be giving the wrong impression in that I'm looking for security based answers. But the longer I think about it, I realise that most general web app related questions will be security related stuff too.