It serves as a beginning, a place from which you and those around you can start looking after yourselves. Bombs 101 will not make you an expert on bombs. You shouldn't be planning on putting together your personal bomb disposal tool kit when you finish reading this. Even for adults, playing with bombs is like toddlers playing with matches. No one can do it in absolute safety.
Bombs are deadly.
If there is a 1 out 1,000 chance that some suspicious package you encounter is a bomb, if there is a 1 out of 100 chance that the caller was right when he said a bomb would go off in 10 minutes, it is prudent to call for the experts and let the control of this potentially-explosive situation pass from your own hands. The reality is that, when the experts are finished, they'll probably find out the suspect package was sent by someone you know. Or they'll discover that the call was a prank played by someone with a warped and twisted sense of what passes for humor. And at the end of the whole mess you're probably going to feel sheepish for calling on the bomb squad. And, in the face of that knowledge and that probability, you're prudent to call out the bomb squad nonetheless.