how much is enough to clip? Just the very tip? Or further up?
You are right in not clipping the "pink" part. The answer to this question depends, of course, on how long the nails are. But cutting just the tip is a good way to start. More can always be taken if needed.

**OH Phred.....** Yoo Hoo, where is that picture diagram of the cat nail and where to clip ?.......