Yes the financial crisis has happened many times before. But it ussually happens every 40-50 years so people shouldn't be worried about it because if you do you will be older and will understand it better any way.
I have some top tips for you if you are worried.
get a job earler so you would of been working for a couple of years and it would be less likely to lose your job because you would probbably know how everything works
rent a house because if you by a house it is more likely to lose your house
don't have two bits if propety because you will probbably have to sell or give the house to someone else to use