When watching Taxi Driver I noticed that a character named Sport had a long pink fingernail. I didn't know why and thought about asking here. But googling pointed me towards a reddit post. Such a question had not been asked on M&TV before and the reddit post is not that great an answer. So I decided to ask here and contribute positively to that Stack. I decided to answer myself also because I had already done research and ironically feared DVs for a lack of research.
First, everything went fine and I received UVs for my question and answer. But today I received two comments and coincidentally DVs for both my answer and question (for sure it needn't have been the commenters).
To be crystal clear, it is not merely OK to ask and answer your own question, it is explicitly encouraged.
And the User Interface supports publishing your own question and answer together.
The second comment is a bit more concrete but also not so clear because I haven't accepted my own answer nor is the question closed so everybody who wants can still answer it.
I found this question: Is it right to answer your own question within few minutes? It seems to support my initial thoughts that it should be fine, but it is not only pretty old already (from 2012) and today's experience makes me think this might no longer represent community consensus. It's also about the very special case of someone asking and immediately answering identify-type questions that are no longer accepted here. (Another related question is rather about an answer that recapitulates one non-SE article)
That's why I hope for a broader and more general answer on how to behave when you plan to answer your own question which might benefit other new users. Like how long to wait, maybe add a disclaimer that you prepare to answer it yourself, role of and measuring question complexity etc.
What's the etiquette for answering your own questions?