Tip: Take the stodgiest, oldest, slowest moving industry you can find. And build amazing software for it.

Steve Jobs is the most epic entrepreneur of all time. He served as a guiding light for any emerging businessperson who wanted to learn how things should get done. He'll be looked at as one of the best business leaders of all time, and certainly one of the best tech entrepreneurs.

Look for new enabling technologies that create a wide gap between how things have been done and how they can be done.

Too little process and you can't get good work done. Too much process and you can't get any work done. Most companies never find the middle.

Do things that incumbents can't or won't do because it's economically or technically infeasible.

Better to be too early and have to try again, than be too late and have to catch up.

The business models in enterprise have changed pretty dramatically. A huge problem with enterprise software traditionally has been usually you sell to the customer and then they adopt the technology. The great thing about 'freemium' and the new way enterprise software is being sold is you get to try it first and then buy it.