quantum mechanics

Quantum mechanics in general just baffles me especially the double slit experiment. It is beyond bazar how when something was observing the electrons they acted differently I just don't understand how that is possible and how it happens. Some questions that pop into mind when i think about it is how does electron know that it is being watched. I know thus far we can't answer this question I just think it could be the most bazar thing I have ever heard of. And the fact that the electron acts differently when it's being watched leads us to think well then is anything we see really correct, could it also change while it is being observed? Which then leads to many other questions in my mind. I think the subject though is very intriguing yet confusing at the same time. I wonder when the questions of QM will be solved