>>7604441
This is still probably the go-to resource if you're looking to emulate classic trad pen and ink artists. But the like it or not the best advice is to

1) Get basic drawing skills
2) Get comfortable with the tools you'll be using whether that's digital or physical
3) Study the artists you admire. See how the use lines to render form and texture and practice replicating them

If you're lucky you can find video of a good pen and ink artist working and you can see the tools they use and see how they do it in real time.