Installing MongoDB on Linux Arch (or Linux whatever-else)
If using Arch Linux, go to terminal, type
sudo pacman -S mongodb yaourt -S boost-libs
Note: if you have installed other pacman wrapper than yaourt then you obviously need to use installed one. If you have no clue what all of this means read https://wiki.archlinux.org/index.php/Arch_User_Repository
yarn mongo should work perfectly fine.
If using other Linux distribution you need to download mongodb from https://docs.mongodb.com/manual/administration/install-on-linux/ and install it. If you do not have boost libraries you need to download them too from http://www.boost.org/.
npm i -g nodemon npm i -g mongod npm i -g yarn
It will add sample data into database
yarn mongo yarn start