Hi Feathers, and welcome to WW.
What sort of thing are you writing at the moment?
I certainly don't believe there are formulae for writing good novels. Even within a particular genre - crime, say, or chick lit - where readers do have certain expectations of what the book will be like, it has to be fresh and new and different at the same time, and that's all in how you do it. Whenever you try to think of something that good novels or good writing have in common, you can always think of a good novel which does the exact opposite. The only real 'formula' is that whatever you write must keep the reader wanting to read more. Learning to do that is a lifetime's study, and your first novel is just the start!
There are some books which try to peddle a particular idea of plot or structure or kind of writing, but they're the worst kind in the end, even if they do seem to offer a nice comfortable do-what-I-tell-you-and-you'll-be-published set of rules. On the other hand there are some excellent books which can be really helpful when you've got as far as you can with your own writing, and know that you want to move it up a level but don't know how on your own.
You will see people discussing 'the rules' on WW, though lots of us don't regard them as rules to be learnt, but as jumping-off points for thinking about how writing works, and the different ways you can write any given part of a book. For any 'rule' I can think of, I could give you an example of when you should do the exact opposite, so I don't think you can really call them rules.
And you'll also see people discussing what the publishing industry 'wants' about wordcounts, or subjects, or whatever. There's some truth in things like: a book needs to be exceptional to get published if its outside the usual sort of length. But in my experience it's fatal to
set out trying to write to order like that, because the writing you'll do best is
your writing, not someone else's half-explained idea of what people were saying would sell a year ago. You need to find your voice and your writing first, and you can only do that by doing it. Having said 'your writing', though, there's still an awful lot of craft and technique involved. The point, though, is to learn and practice that craft so that you can write
your book better, not to pass some non-existent test of whether your work ticks certain boxes. It's the best book you can write that stands the best chance of being published. It's not easy, and it takes most writers years, but it does happen.
Sorry, that turned into rather a long post! It's a subject that gets talked about a lot on WW, as you've noticed, so I hope you'll stick around and hear some other views.
Emma