My favorite movie or book of all time

My favorite movie is The Martians because I like how Mark Watney was able to survive on Mars without the support of his other astronauts. Also, it was kind of strange how NASA & Mark were having the same ideas of communicating with each other at the same time. But, how did he grow potatoes in the space lab on the martian soil, and how did he make his own water? I also like how Mark managed to survive on Mars alone.