SQL is pretty much self-documenting. But I still use hand-drawn diagrams showing how fields are related.
279 karma · joined May 7, 2010
If you want to do this for a living, look at http://www.careerstep.com
I see opportunities everywhere I look. And so far, I have not had a failure. Not all ideas are reachable, but there are always many that require no investment other than my time and energy. (and always remember: Time is non-renewable. Budget your time very carefully so it is profitable)
I think the most valuable lesson I've learned is that being successful in business is not based on how much money you have. It is much more based on how you allocate your resources. Time is the most important one, because it is non-renewable.
I wish you great success in the future!