When you first bring home a bunny, the first step is to set up a familiar environment for him. Build a nice cage with enough space, put food, water and let him explore his new home. Don't rush to make things with him because he is probably afraid of every new thing that exists around him.
Firstly,my girlfriend built a nice cage with enough space for him. We were prepared and we offered him the time and the room to feel comfortable. After some time his curiosity won his fears and he let us care him. This step is very important since you have to give him space if you want to become friendly and comfortable with you.
Next step was to start his litter training.