I teach a graduate course in computational neuroscience at CMU. My lecture notes, exercises, and Matlab software are all available online via my home page, at http://www.cs.cmu.edu/~dst
I disagree with the notion that only professionals should speak publicly about their scientific work. Amateurs should be welcome in any branch of science. Who knows where the next contribution will come from? And there is plenty of disappointing work from tenured professionals. So read the journals, but be prepared to wade through a lot of straw to find the gold. One of the advantages of graduate school is that there are experts who can help you with this.