I jumped my boyfriend's truck with my 2001 Pontiac Montana and now nothing is working. No widows, instrument panel, radio, door chimes, nothing.

Jumping is not a "bad idea" if done right. Now you need to check fuses and such but take a few minutes and think about how you did the "jump". Polarity is crucial so did you connect the red jumper cable (positive)to the red (positive) battery terminal of the dead vehicle and the black (negative) jumper cable to the negative battery of the dead vehicle? Its other end then should have been connected to a solid ground point away from the battery on the donor car? If you think you did it wrong, that would explain why your car is now giving you issues.

The jumper cables were connected correctly. I have checked all of the fuses but the ones you can't check by sight. I need to purchase a tester.

The quickest and probably cheapest solution is to turn the car over to a reliable shop to do the troubleshooting. It will save you time in the long run and you can delay buying any test equipment that you may not need for quite a while.