A CentOS 7 web dev checklist.

To Set Up PostgreSQL:

Run yum install postgresql-server postgresql-contrib; installs PostgreSQL and some utilities
Run postgresql-setup initdb; sets up the default config
Near line ~82 in /var/lib/pgsql/data/pg_hba.conf, change the method from ident to md5 on the host lines
Run systemctl start postgresql to start the SQL server
Run systemctl enable postgresql to enable it as a service
Setup created a postgres "root" user called postgres you can become that user with sudo -i -u postgres
You can get a SQL prompt with psql; exit SQL prompt by typing \q
Postgres user also has the createuser and createdb commands available; by default, it matches user accounts and database names by the user account that is accessing it. So you will likely need to add a user and a db named after an existing UNIX account.
Once you have a user, you can add a password for them in the psql prompt: \password username; it will prompt you to set a password for the user.

If you are using laravel, then the web folder should be the folder in your project called 'public'. So you will probably end up with something like /home/account/web/public; Where you put it is up to you, but your actual Laravel installation should be outside the user's web root folder.
Run chown -R account:account /home/account/site_folder in order to ensure that the user can write to his files. You must do this to your Laravel project folder to ensure that the storage folder is writable.
Run service php5-fpm restart
If you have any SSH keys to add, now is the time

You'll need to install composer:

wget -q -O - https://getcomposer.org/installer | php sudo mv composer.phar /usr/local/bin/composer
Ensure you read this