[andersamundson]

If you're looking to learn about finance from a Wall Street/Corporate perspective, learn how a DCF (Discounted Cash Flow) model works. There are many such resources. Wall Street Training is a good, practical one.

Two good resources that give a strong philosophical foundation are Howard Mark's Chairman's Letters (free @ Oaktree Capital website), David Einhorn's "Fooling Some of the People All of the Time", and Nassim Taleb's "Fooled by Randomness."