If you're mathematically inclined, Steve Keen himself recommends Dynamic Economic Systems by John Markus Blatt. As an aside, I would also recommend reading Tho

If you're mathematically inclined, Steve Keen himself recommends Dynamic Economic Systems by John Markus Blatt. As an aside, I would also recommend reading Thomas Piketty's Capital for 21st Century. IMHO it gives you a deeper historic perspective on economics than just couple decades back.