I think that George Reisman is the best living economist today.
Reisman was a student of both Ayn Rand and Ludwig von Mises. Reisman’s magnum opus is “Capitalism: A Treatise on Economics“. It is available for free in pdf format on his website.
He has also written many great shorter essays on different economical subjects which are all available on Amazon for pretty much $0.99 a piece as far as I am aware.
A few days ago Reisman posted a series of lectures that he delivered between 1967-2007 on his blog which can help in understanding “Capitalism: A Treatise on Economics” better.
If you want to learn good economics, I recommend you to start reading Reisman and listening to these lectures.