3. http://www.ee.ed.ac.uk/~gerard/Teach/Verilog/index.html An intro to digital design and Verilog
5. http://dmoz.org/Science/Technology/Electronics/Design/Hardware_Description_Languages/Verilog/ A dmoz search, with many usable links
6. Verilog examples from CS223 in previous years & previous textbooks: 2010, 2011 and other. LCDF Chapter 4, LCDF Chapter 5. Behavioral-style Verilog
7. VHDL & Verilog Compared and Contrasted a paper from a neutral viewpoint assessing both languages