This guy has some really awesome tutorials on youtube on how to draw with pen and ink. His tutorials inspired me to give doodling a go and I'm so greatful to him for it.
He has published a book on this subject. It's been out for almost a year now. Apparently I haven't kept up with his tutorials lately (which piled up to be a year, but that's my idea of "lately") so I didn't know about it. But now I do and it's oh so going up on my Christmas wishlist.
You can buy it (among other places I'm sure) on:
amazon
bokus
adlibris
You can buy it (among other places I'm sure) on:
amazon
bokus
adlibris
Here's one of my drawings following his tutorial:
Check out that tutorial here and while you're at it subscribe: