The internet is great for doing just that.. Most things you can find an answer to, by just typing in your question into the google search engine, or by searching within wikipedia, but if what your after is more like advice, or something too technical, or something you just can't quite find with google or another search engine, then you could try asking your question on one of the many question and answer websites..
I know of 3 that you could try, there are probably more too, feel free to comment if you know of others..
These are the ones that I know of:
1. Answer Bag
2. Yahoo Answers
3. Fun Advice
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