Welcome to Writing SE!
Unfortunately I think you're correct in that this would be off-topic as a question looking for "general" tips would be too broad for the SE format. Really we need questions that have a narrower scope.
As the help page puts it:
Your questions should be reasonably scoped. If you can imagine an entire book that answers your question, you’re asking too much.
That doesn't mean you can't gather awesome, writing tips, ranked by votes for their usefulness - because really the question that you propose is the whole site, with the "tips" helpfully categorized into specific areas of writing by the questions and their tags. This means that if you are looking for "tips" on say "How to overcome writers block?" You can do to the tag page for it and you'll get a list of the questions asked around it select a question that sounds most like your situation and get a selection of answers that are community ranked by their votes.
The ranking is then more useful to you because these are different solutions (or "tips") that are being directly compared with each other as to how well they solve the particular problem.