Download and extract ze_jurassic_park_story_v1.rar
It should download to folder Downloads.
Open ze_jurassic_park_story_v1.rar in WinRAR
and choose "Extract To" and then "OK" to extract
it to folder Downloads.
Find extracted folder ze_jurassic_park_story_v1
It should be in folder Downloads
In a separate window, find folder Steam
It should be in folder Program Files or folder Program Files (x86)