Takes me back to the time where I would pickup any books that taught anything about computers/programming. I was too young to understand any of it, but the fact that there's this knowledge to be unlocked, that would then let me do new things with this white boxy device on my table top - was truly addictive.

I can't say the feeling remains because most new stuff that I learn now is not runnable on my machine now. Tech has gone back to the days when owning hardware that's capable of running the latest has become a costly affair.