Research is not so much a requirement of asking questions as it is a tool that you can use to make your questions as high in quality as possible. Focus on asking quality questions. You can research as little or as much as you want so long as the result is a quality question.
Here are some pitfalls that research helps you avoid:
- If your question is a duplicate, or if it's very easy to look up, then your question is not very useful because it is obsolete. If you do research before hand, you can often find your answer without even needing to ask here. If an answer that does nothing but quote Wikipedia is sufficient, you know you failed on this point.
- If you're unfamiliar with the basic premise behind your question, then it might not be very coherent research can help you ask a more meaningful question, and it can also help you preemptively address clarification questions that people will leave int he comments.
Your goal is to avoid those 2 pitfalls, and whatever level of research accomplishes that is fine.
On the flip side, if you cite research that is not crucial to the question you're asking just to prove that you're somehow worthy to be asking, that doesn't help your question. In fact it makes it less focused.