Fish & Associates, PC | Robert D. Fish
In general, you can read anything you want. What you cannot do is copy, derivate, distribute, perform or publish the material without authorization. And note that reading the material on a computer may technically comprise copying because your computer keeps a copy in memory.
Answer Applies to: California
Mark S. Hubert PC | Mark Hubert
That depends if the author has allowed the free reads. Just because it is on the internet does not mean it is legal - look at Napster. I don't know if it was only to be released as a printed publication or if the authors intent was to donate it to the public domain.
Answer Applies to: Oregon