Can you make a tutorial to demonstrate, compare between Android unit measurement (px, dip, dp, sp) in layout. What's the different between them? And when do we use one of it?

I agree, I've been using px mostly, just because it's easy and simple, but I'd like to become better versed.

Yeah, I think it's simple. But I sometimes find it's difficult to imagine. So, I think I need to understand them clearly.