Verilog
VHDL
- Free Range VHDL – Bryan Mealy, Fabrizio Tappero (TeX and PDF)
- VHDL Tutorial
- VHDL Tutorial: Learn By Example
Vim
- A Byte of Vim
- Learn Vim Progressively
- Learn Vimscript the Hard Way
- Use Vim Like A Pro – Tim Ottinger (Leanpub account or valid email requested)
- Vi Improved — Vim – Steve Oualline (PDF)
- Vim Recipes (PDF)
- Vim Regular Expressions 101