I initally started with apple 2's and apple 2e's, worked through machines bigger than your kitchen, Even worked on one that had valves LMAO!
(Yes it is possible)
Punch cards especially bring back alot of memories. (They used to be used to program)
I've worked for alot of govt and banks via second parties in an IT maintenance, security, adminstration, database adminstration and maintenance roles.
Through the many and varied jobs over the many years in the IT industry I have learned you never do stop learning.
I currently work for a global supplier of computer solutions providing on my part archiving and rapid retrevial of archived information on a number of platforms for global customers.
It seems like a lifetime spent learning them, and still learning.
The moment you stop learning or wanting to........Well....
I'm still learning and loving every minute of it. :)