Re : using timer

Without answering fully your request, as I haven't played much with the Movie library, here are some generic advices:
- Load help.png in setup(): if you load in the middle of a sketch, it will make a visible stop in the succession of frames, so when you don't need to load a bunch of images, just load them upfront.
- The condition you look for is:
if (millis() > time2)
if you want the event to happen after time2.
At a simple level, if you want to display the movie for the first period and the image after it, it would be something like:

1. void draw() {
2.   background(0);
3.   if (millis() < time2) {
4.     image(movie, 0, 0);
5.   } else {
6.     image(helpimg, 0, 0);
7.   }
8. }

If you want more complex conditions, you can start to use booleans or integers to reflect the state of your sketch.
For example, with integers, you can number steps:
1 = display movie
2 = display help
3 = display movie again, for a different duration
etc.
The switch keyword is useful for this kind of state management...