This is far and away the best overview I have read on being an Angel Investor. To share your insights with others, I inserted in my website, http://dielschneider-associates.com/invest/angel-investing/
the following:
For you, the best overview and advice on angel investing I have ever found is from Paul Graham's "How to be an Angel Investor". Here is the link to this excellent and easy to read presentation: http://www.paulgraham.com/angelinvesting.html