First off, videos...yes, even youtube videos can show you somethign a thousand times, but you cannot ask them questions. You need an instructor. I have been doing PP for a very long time. Feel free to drop me a line privately.

1) About how many pp are there in the human body?
My teacher said 361 primary points, also eight extraordinary vessels, six of which are comprised of primary points and two are simple to learn.
2)Can we learn some here?
That depends. Ask you question and I will se what I can do for you. Most likely though, you will still need that instructor I told you about.

3)Where can I find some tutorials?
Try googling Geroge Dillman, Erle Montague, Kyusho International. Still, you need an instructor.