> if so, how to approach any topic and prepare? What I usually do is to search for some people who I consider expert in that field and ask. Common questions I

> if so, how to approach any topic and prepare? What I usually do is to search for some people who I consider expert in that field and ask. Common questions I ask: * Can you recommend a book, tutorial, course as an introduction of your field? * What are the latest developments in your field? Can you point me to some papers on these topics? * What do you recommend a newcomer to do in your field? * (most important question) What are the biggest challenges in your field at this moment?