A door, button 1 OR button 2
I've tried using the logic tutorial on the wiki but that didn't work.
I was hoping I could get a better explaination in the forums about how to open a door if button1 or button2 are pressed in. (Cube-buttons)
Just use a couple of logic_branches
I tried using logic_branches.
I'm asking for an explaination of how to make such a door.
I don't hope you need an explaination of what an explaination is.
I know that it's possible with math_counter and logic_branches, but I dunno how.
You need to setup your buttons to fire an Input to the logic_branch, and have your logic_branch (or math_counter) set to open the door whenever it receives any input.
Or did you want step-by-step, hold-my-hand, spoon-fed instructions? 
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Here's how I'd do it
Button (give both the same outputs)
OnDown:
toggle Branch
open Door
OnUp:
toggle Branch
test Branch
Branch
OnFalse
close Door
Usually, it's pretty simple to figure out how you need to arrange things. Just think to yourself "What do I want happen when the button is pressed, and under what circumstances?"
In this case you would say "When a button is pressed, I always want the door to open. When a button is let up, I only want the door to close if the other button isn't pressed"
I'm not bad in logic, I just didn't know how to use those entities.
ill try what ye posted.