My start into pen and ink was purely accidental. I was in Barmer, Rajasthan and frustrated with waiting for an oil painting to dry. I started scribbling with ink, added some ink blobs, smudged them around and voil I had a wonderful painting.
I love the immediacy of the pen and inks, does not take too much time to do or dry. But it is a whole lot more difficult, as it is probably the least forgiving of all the mediums. As in, one mistake and its gone. Next to impossible to correct.
I start with a preliminary sketch and then start inking.