ଉଇକିପିଡ଼ିଆ:Help desk/RD tip 1 (plain)
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Have you tried Wikipedia's Reference Desk? They specialize in knowledge questions and will try to answer just about any question in the universe (except how to use Wikipedia, since that is what this Help Desk is for). Just follow the link, select the relevant section, and ask away. I hope this helps.ଛାଞ୍ଚ:Z37