I wanted to install raspberry by myself. I took an empty SD card and loaded to it Raspbian installer. Raspbian is OS dedicated to Raspberry Pi. You can find a manual how to install Raspbian here.
After long waiting and thew crashes I understood that installation failed.
I decided to choose different approach. I downloaded Raspbian image from here and used Win32DiskImager tool to write this image to SD card.
Finally, Raspbian started.