One can learn a great deal from the various liberty, free-market, property rights and Constitutional government websites that populate the internet. My favorites include some that by any measure are among the very best; most are updated daily, so do visit them frequently:

The Ludwig von Mises Institute - liberty and free market economics
Lew Rockwell - anti-state, anti-war, pro-market articles
Walter E. Williams - economist and nationally syndicated columnist
Harry Browne - master spokesman for liberty
Rebecca Iocca on Liberty - timely and topical pro-liberty writings
Congressman Ron Paul - official congressional website
Ron Paul's Campaign for Liberty - advocating for liberty and a Constitutional government
Ron Paul for President 2012 - official campaign website
Judge Andrew P. Napolitano - freedom fighter extraordinaire and host of "Freedom Watch" on Fox Business Network