Comment by pmontra

Web search is dead for that. When faced with a new product category I don't know anything about I go on YouTube and look for people explaining how to use those kind of products, then look for unboxing or reviews, finally I get a rough idea. Then I can search the web for the few products that seem to fit my needs and budget. The advantage of video is that it's (still?) easy to see if something is a genuine or a fabricated review. The disadvantage is that video takes a much longer time than text.