When it comes to resources, there’s one book I recommend any pen and ink artist to have in their library and that’s The Technical Pen by Gary Simmons. For anyone who wants to learn more on not just how to get the most out of their technical pen but also on just drawing with pen and ink in general, this book is full of explanations on how to build form, tone and textures in pen and ink renderings. Simmons does a wonderful job of giving step by step demonstrations that illustrate how to develop good, solid image construction from the initial pencil sketch to the final inking. He also points out the common mishaps and pitfalls and how to avoid them when mastering the medium. Although I mainly do stipple work, this is still my go-to reference guide for when I want to get a good idea on how to construct various line techniques and patterns. So if you come across this book at your local library be sure to pick it up and take a look through it. It’s also available on Amazon here, if you want to get your own copy. If it’s currently out of print, you may still be able to purchase a used copy at a descent price from some of the Amazon merchants.