Squash Blossoms

I have some zucchini squash that is blooming and I have been
harvesting the male blossoms off of it.

In the process, I got some of the long stem as well as the blossom.
Is the stem ok to eat?

Can I also harvest the female blossoms once a zucchini is growing to
about 3 inches long, leaving the little squash to continue growing?

If the stem is ok to eat, is the rest of the plant ok to eat as well?

So many questions, and so little time to hunt the answers.

;-)