How to become a professional internet researcher?

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The develope of the internet really change our life a lot. We can easilly access to information of anything thru The Internet. I am sure many knows how to use search engines to look for information, i am doing that too. However i thing there should be some professional ways to search for information in the internet using various professional tools, appropriate methods and appropriate websites to do so. Anyone who is a Pro in doing so? From searching general info to specific info like any professional fields, enterprise info, market data, statistics, local info & etc? I am grateful to learn from you all:-)