I will try to help you with an example. Before I lived in the city, I was not used to the constant noise of the traffic on the street outside my bedroom window. I got used to this noise over several months. / After several months, I have now finally got/gotten used to it. Now, I am used to this noise.

Be used to something = to be familiar with something / to know something/someone well e.g. I am used to that kind of humour/music/food/sound, etc. Get used to something = to be on your way to knowing something/someone better, to becoming more familiar with someone/something e.g. The adopted child is more relaxed and is now getting used to her new family.

These are the same things but "get used to something" means that something is unusual but you are getting used to it, caphiche?