You thought making the money was the hard part...
When those who have "done well" decide to "do good," philanthropy tends to happen. Usually this is a good thing. And the good news, for such folks, is that philanthopy is something that just about anyone can do poorly, and more than a few can do reasonably well without really trying too hard.
You, I presume, found your way here because you aspire to something more than hopeless mediocrity. You have decided to practice philanthropy thoughtfully with an eye for excellence, and you recognize this means setting out across strange waters.
For in philanthropy, we are usually chasing some fuzzy thing called "making a difference " or "social impact", to say nothing of the emotional, spiritual and moral returns we expect but rarely discuss. Such things are hard to articulate, difficult to achieve and challenging to measure.