I have gone through the example you posted and many others and I still cannot seem to wrap my head around this. I am new to arduino and programming in general.
Thanks for all you'r help!
Whenever I see this statement about the millis thing all I can think is that the person might have glanced at the page but definitely didn't study it very hard. We're not talking about rocket surgery. The concept of keeping up with what time it is now and what time something happened is about as simple as it gets. If you can't wrap your head around it then maybe programming isn't for you.
I mean how in the world do you ever make it to work on time?
Imagine that it is 11:00 and I tell you to do study Nick's page for the next hour and a half. How would you manage that? How would you know when an hour and a half had passed?